Falloposcopy—A transvaginal endoscopic procedure to examine the fallopian tubes, especially the intramural and isthmic segments.
Fimbrial phimosis—Agglutination of the fimbriae.
Fimbrioplasty—The reconstruction of the fimbriae or tubal infundibulum.
Hydrosalpinx—A distally occluded tube, usually secondary to infection, which distends with accumulation of serous fluid.
Hysterosalpingography (HSG)—An x-ray-based contrast test to assess the uterine cavity and the fallopian tubes.
Pelvic inflammatory disease (PID)—An inflammatory disorder of the uterus, fallopian tubes, and adjacent pelvic structures usually secondary to a sexually transmitted infection.
Salpingo-ovariolysis—The division and/or excision of periadnexal adhesions with the aim of restoring normal anatomy.
Salpingoscopy—An endoscopic examination of the ampullary portion of the tubal lumen.
Salpingostomy—The creation of a new stoma in a tube with a completely occluded distal end.
Tubal cannulation—The passage of a flexible guide wire and narrow-gauge cannula through the proximal tubal ostia along the length of the tube.
Tubotubal anastomosis—The surgical approximation of tubal segments after tubal sterilization or excision of an occluded or diseased portion of tube.
The fallopian tube is a very important organ for the survival of our species. Human life normally originates in the proximal ampulla of the fallopian tube where the oocyte and sperm meet and where fertilization takes place. The physiologic functions of the human oviduct include pro-ovarian sperm transport to the site of fertilization, ovum pickup and prouterine transport of the ovum, ampullary retention of the fertilized oocyte (approximately 72 hours), provision of a suitable environment for fertilization to occur and for the zygote to survive, and, eventually, transport of the zygote from the ampulla to the uterine cavity. Alterations in any of these functions (caused by either damage to the ciliated epithelium or tubal distortion or occlusion) can result in tubal implantation (owing to the lack of transport of the zygote to the uterus) or infertility (owing to the prevention of sperm meeting the oocyte).
In vitro fertilization (IVF) techniques, which have experienced significant improvement in the past three decades, in effect replicate most of the functions of the fallopian tube, except for transport of the preembryo into the uterine cavity. This last step (embryo replacement) is performed using a cannula into which the embryo(s) is aspirated; the cannula then is introduced into the uterus through the cervical canal, and the embryo(s) is deposited in the uterine cavity.
TUBAL FACTOR INFERTILITY
Much of the increase in the incidence of both infertility and tubal pregnancy in the past four decades has been the result of tubal damage after sexually transmitted pelvic infections. The commonly isolated organisms are Chlamydia trachomatis, Neisseria gonorrhoeae, and Mycoplasma hominis, of which Chlamydia is the most common. These organisms appear to account for most primary invasions; however, in 15% to 60% of cases of acute pelvic inflammatory disease (PID), aerobic or anaerobic bacteria, or both, can also be identified. The clinical picture can vary from an almost asymptomatic condition to a life-threatening event. As demonstrated by Westrom and colleagues, and by Paavonen and Egert-Kruuse, patients with a more severe clinical appearance often have both aerobic and anaerobic infections.
The classic clinical picture of PID, which includes pain, fever, and lower genital tract infection, occurs in less than 50% of affected patients. Gomel reported that more than half of the patients who were investigated for infertility and were found to have a hydrosalpinx gave no previous history of acute PID. This observation has since been confirmed. Indeed, the wide variation in the clinical presentation makes the diagnosis problematic.
It has been estimated that acute PID occurs at a rate of 10 cases per 1,000 women per year in the age group 15 to 39 years and at a rate of 20 cases per 1,000 women per year in the age group 15 to 24 years. Just as there is difficulty in diagnosing PID, there is difficulty in ascertaining the trend in its incidence. Westrom and colleagues reported that in PID cases, the rate of isolating Chlamydia per population of 100,000 has increased annually since 1984.
Data from Westrom and colleagues, and from Paavonen and Egert-Kruuse, indicate the infertility rate after a single episode of PID correlates with the degree of residue of tubal damage. Tubal infertility also increases with recurrent episodes of PID. Infertility occurred in 8% of patients with one episode, 20% with two episodes, and 40% in those with three or more episodes of PID. Further, up to two thirds of cases of tubal factor infertility and one third of cases of ectopic pregnancy may be attributable to C. trachomatis infection.
INVESTIGATION
The investigation of the infertile couple should be concluded rapidly, accurately, and inexpensively, with as little invasion as possible. In addition, the emotional needs of the couple must be recognized and addressed. Investigation must commence with a thorough clinical assessment of the couple. A detailed history followed by a thorough physical examination permits the selection of the necessary tests to undertake. A positive history of PID or the finding of Chlamydia antibodies has a predictive value for tubal pathology of odds ratio (OR) 3.7 (1.7 to 8.4) and that of ruptured appendicitis of OR 4.4 (2.5 to 7.6). This chapter discusses only investigations specific to tubal and peritoneal factors of infertility.
Tubal Insufflation
Tubal insufflation is a tubal patency test, first described by Rubin, which is now rarely performed. The procedure uses an endocervical cannula connected, by rubber tubing, to a mercury manometer and a source of carbon dioxide (CO2). The rate of gas flow through the system is gradually increased to approximately 30 to 60 mL per minute. Tubal patency is determined by one or more of the following: a written record of the rise and rapid fall of the gas pressure, auscultation of the lower abdomen for the gas passing through the tubes into the peritoneal cavity, or direct visualization of the pressure changes on a mercury manometer.
This historic tubal patency test has been replaced by hysterosalpingography (HSG) and/or salpingosonography. Both of these tests should be performed before ovulation, about the tenth day of the cycle. Administration of one of the nonsteroidal anti-inflammatory medications is helpful to the patient as it reduces her discomfort due to uterine cramping and thus diminishes diagnostic errors.
Hysterosalpingography
Hysterosalpingography is a contrast study of the uterine cavity and fallopian tubes. It is a simple, inexpensive, safe, and rapid diagnostic procedure that, when performed properly, provides valuable information about the uterine cavity and tubal patency and architecture.
Contraindications to HSG include pregnancy, uterine bleeding, lower genital tract infection, PID, and allergy to the contrast material. In women with a history of recurrent PID, or with any suggestion of a recent exacerbation, there is a significant risk of reactivation of quiescent PID. This occurs in approximately 3% of such patients. To combat this risk, some centers prophylactically administer antibiotics. During the preliminary history and physical examination, the physician must search for possible contraindications and screen for and treat any lower genital tract infections, before performing an HSG. Prophylactic antibiotics prior to HSG are indicated in selected cases, particularly if hydrosalpinx is suspected.
Technique
Hysterosalpingography must be timed to occur between the complete cessation of menstruation and ovulation. This will avoid the risk of disturbing a luteal phase pregnancy. Such timing also avoids radiation exposure to the oocyte that will resume meiosis after the luteinizing hormone surge. Administration of a nonsteroidal anti-inflammatory medication before the procedure reduces the patient’s discomfort and diminishes errors associated with HSG. The latter is especially applicable to errors regarding cornual occlusion. This has been clearly demonstrated in a study by Lang and Dunaway.
An oil-soluble or water-soluble contrast medium can be used. A recent Cochrane meta-analysis by Luttjeboer et al. concluded that use of an oil-soluble media increases subsequent pregnancy rates when compared with no intervention (OR 3.30; 95% confidence interval [CI] 2.00 to 5.43); however, there was no significant difference in the odds of pregnancy with oil-soluble versus water-soluble media (OR 1.49; 95% CI 0.95 to 1.54). Water-soluble media are most widely used; they are better tolerated by the patient; further, water-soluble media coat the surfaces without sticking to them, producing sharp and finely shaded images and greater visual detail of the lesions. These characteristics enable better assessment of the intraluminal architecture (Fig. 21.1). The contrast material is eliminated within 30 minutes.
FIGURE 21.1 Hysterosalpingogram. Early film demonstrates a normal uterus and a left hydrosalpinx. On the right, there is an ampullary defect (arrow) at the site of a previous tubal pregnancy, which was treated with parenteral methotrexate administration.
After the patient has emptied her bladder, she is placed on the radiographic table. A bivalve speculum is inserted into the vagina, and the cervix and upper vagina are washed with an antiseptic solution. The appropriate cannula, which is filled with contrast material and emptied of any air, is attached to the cervix in such a way as to ensure a tight seal. The speculum is removed before the injection of contrast material. Removal of the speculum is important (especially if the metal variety is used), not only to decrease the patient’s discomfort but also to avoid obscuring the cervical canal and vaginal fornices on the x-ray films.
Hysterosalpingography must be performed under fluoroscopic control with the use of an image intensifier. With the syringe attached to the cannula, the contrast material is injected very slowly to avoid discomfort, contraction of the uterus, spasm of the uterotubal junction, and obscuring of the lesions with a large quantity of contrast material. Films are taken to record salient features as they appear on the monitor. An average of three to five films are taken. Preliminary films are of limited value; they can be used to identify misplaced intrauterine contraceptive devices or areas of pelvic calcification. Such information can also be gained by examining the first film.
As the contrast material is injected slowly and intermittently, the endocervical canal, isthmus, and uterine cavity are visualized. To straighten the uterus, firm traction is maintained on the cervix. A film is taken at this point. It is essential to obtain films early during the procedure to record any intrauterine lesions and details of the intratubal architecture. Such details are obscured by larger amounts of contrast material in the uterus, tubes, and peritoneal cavity. Another film is taken when the contrast material starts to escape into the peritoneal cavity (Fig. 21.1). Injection of medium is continued slowly until tubal patency is unquestionably established. Manipulation of the uterus with the cannula may be necessary to display specific tubal segments. A film is obtained when abnormal findings are encountered. In certain cases, a true lateral film may provide useful information. When taking this exposure, the traction on the cervix is temporarily released to obtain information regarding the position of the uterus, the location of intrauterine lesions, and the course and configuration of the tubes.
The last phase of the procedure includes a delayed fluoroscopic examination and a film taken 10 to 20 minutes (when water-soluble contrast material is used) after removal of the cannula. This examination and film may yield information about the external contour of the internal genitalia, the shape of the ovarian fossa, and the presence of periadnexal adhesions.
With adherence to proper technique, complications are rare. Major complications include PID, uterine perforation, bleeding from the tenaculum site, and intolerance to iodine, especially if intravasation of contrast occurs. Oil-soluble media may cause granulomas in the pelvis and serious complications if intravasation occurs; a case of cerebral embolization has been reported by Dan et al.
Hysterosalpingography performed using water-soluble media provides precise information about the uterus and oviducts that can assist in patient management. Abnormal uterine findings include fusion anomalies, T-shaped uterus, submucous fibroids and endometrial polyps, intrauterine synechiae (Fig. 21.2), and other less commonly identified lesions, such as adenomyosis. Tubal abnormalities that can be observed are listed in Table 21.1 and shown in figures from Gomel and colleagues (Figs. 21.3,21.4,21.5 and 21.6).
It must be noted that HSG has limitations: (a) it often does not indicate the exact nature of intrauterine lesions; (b) it is associated with false-positive results with regard to cornual occlusion, which may necessitate a selective salpingography and/or tubal cannulation; and (c) it has a low positive predictive value in the diagnosis of periadnexal adhesions and endometriosis. For these reasons, laparoscopy and, when necessary, hysteroscopy are undertaken to elucidate the diagnosis. Indeed, HSG and laparoscopy are complementary, not competitive, procedures in the investigation of infertility associated with tubal and peritoneal factors.
FIGURE 21.2 Hysterosalpingogram in a patient with Asherman syndrome. Contrast material outlines the cervical canal and a part of the lower uterine cavity, the remainder of which is obliterated by synechiae. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St Louis, MO: Mosby, 1995:106, with permission.)
In many instances, HSG demonstrates the presence of severe tubal damage or conditions deemed inoperable. Severe intratubal adhesions, and distal tubal occlusion in association with cornual lesions, such as salpingitis isthmica nodosa, are examples of contraindications of reconstructive surgery. In such instances, the couple may be advised of the significance of the findings, and IVF may be recommended as primary treatment, without recourse to laparoscopy.
We have been viewing and continue to view a well-performed HSG as a good, inexpensive, initial test to assess the uterine cavity and the fallopian tubes and are pleased to note concurrence in the American Society for Reproductive Medicine’s (ASRM’s) committee opinion in this regard: “There is good evidence to support HSG as the standard first line test to asses tubal patency, but it is limited by false positive diagnoses of proximal tubal blockage.” It further states: “The evidence is fair to recommend tubal cannulation for proximal tubal obstruction in young women with no other significant infertility factors.”
TABLE 21.1 Abnormalities of the Oviduct
ABNORMALITIES OF THE OVIDUCT
ABNORMALITY
SIGNS
COMMENTS
TUBOCORNUAL REGION
Failure of contrast to enter tube
Simple obstruction
May be owing to tubal spasm; may be unilateral or bilateral
Salpingitis isthmica nodosa (SIN)
Appears as a simple obstruction or as spicules of contrast radiating from tubal lumen
May be unilateral or bilateral
Endometriosis
Similar to SIN, usually with more pronounced punctate pattern
May be unilateral or bilateral
Polyps
Small globular or elongated vacuoles surrounded by contrast medium
ISTHMUS
Occlusion
Contrast outlines portion of the isthmic segment.
Most commonly owing to prior surgical sterilization or tubal pregnancy, less commonly to SIN, and uncommonly to tuberculosis and endometriosis
Intraluminal retention of contrast medium and slow intraperitoneal spill from stenosed tube
Both conditions are usually sequelae of PID
INTRAPERITONEAL SPREAD
Adhesions
Localized pooling and loculation of contrast medium around distal end of oviducts
Modified from Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St Louis, MO: Mosby, 1995:105.
FIGURE 21.3 Hysterosalpingogram showing bilateral proximal isthmic lesions typical of salpingitis isthmica nodosa. The right tube is occluded, whereas the left is still patent. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St Louis, MO: Mosby, 1995, with permission.)
Selective Salpingography and Tubal Cannulation
Selective salpingography is the injection of a contrast medium directly into the uterine tubal ostium with the use of a special radiopaque cannula inserted through the cervix. The increased pressure generated by the direct injection helps to overcome obstructions associated with mucous plugs or minor synechiae. Data from Thurmond, Novy et al, and Papaioannou et al. indicate selective salpingography is technically possible in approximately 90% of available tubes.
Cannulation of the tube requires the use of a special flexible guide wire and narrow-gauge cannula. This cannulation system is introduced through the larger cannula, which is used for selective salpingography.
If HSG demonstrates a cornual or proximal tubal obstruction (Fig. 21.7), selective salpingography with or without tubal cannulation (Fig. 21.8) should be the next step; this is ideally performed in the same setting. These techniques are useful in differentiating true from false cornual occlusion. The benefits of this approach have been shown for apparent cornual spasm, obstructions caused by amorphous material (tubal plugs), and tubal synechiae. Indeed, half of the tubes that were proximally blocked at selective salpingography were found to be normal after tubal catheterization in the largest series reported to date. It is doubtful that these techniques have a real therapeutic effect on pathologic occlusions that are due to obliterative fibrosis, chronic follicular salpingitis, salpingitis isthmica nodosa, or endometriosis.
FIGURE 21.4 Hysterosalpingogram. Both tubes exhibit extensive intratubal adhesions. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St Louis, MO: Mosby, 1995:106, with permission.)
FIGURE 21.5 Hysterosalpingogram showing bilateral hydrosalpinx. The longitudinal epithelial folds are preserved in the left tube. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St Louis, MO: Mosby, 1995:106, with permission.)
Salpingosonography
Salpingosonography is a sonographic technique to assess the uterine cavity and tubal patency. After the insertion of a Foley catheter into the cervix, transvaginal sonography is carried out to assess the pelvic structures. Then, a 20-mL syringe is filled with 10 mL of saline solution followed by 10 mL of air. Air is injected first slowly, and passage is followed through the tube; saline is then injected to cause the air bubbles to flow more visibly through the tube. Air-filled albumin microspheres have also been used for this purpose. Several authors (Chenia et al., Inki et al., Strandell et al.) found salpingosonography to have a concordance with laparoscopy of approximately 80% and with HSG between 72% and 90%. Although the concordance with HSG with regard to passage of contrast into the peritoneal cavity appears high, it is important to remember that salpingosonography does not provide any information about the intratubal architecture. Yet, the pain scores associated with both of these techniques were comparable, as demonstrated in a prospective study by Cheong and Li in 2005.
FIGURE 21.6 Hysterosalpingogram. The tubes exhibit findings typical of a prior tuberculous salpingitis. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St Louis, MO: Mosby, 1995:108, with permission.)
FIGURE 21.7 Hysterosalpingogram showing bilateral cornual occlusion. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St. Louis, MO: Mosby, 1995:109, with permission.)
Salpingoscopy
Salpingoscopy is the endoscopic examination of the ampullary portion of the tubal lumen. This can be accomplished with a small-gauge rigid or flexible endoscope during either laparoscopy or laparotomy. If the distal tube is totally occluded (hydrosalpinx), it is necessary to make a small opening at the fimbriated end to permit the introduction of the scope. The tubal lumen is visualized while distended with physiologic solution injected through the outer sheath of the rigid endoscope or the channel of the flexible scope. The distal end of the tube must be appropriately manipulated to bring it into the axis of the scope. Salpingoscopy permits direct assessment of the tubal epithelium. The findings have been classified into five grades. Grade 1 refers to normal mucosal architecture. Grade 2 refers to tubes that demonstrate variable degrees of flattening of both major and minor mucosal folds, which are largely preserved. Grade 3 refers to tubes that demonstrate focal adhesions between mucosal folds. Grade 4 refers to tubes with extensive intraluminal adhesions or disseminated flattened epithelial areas. Grade 5 refers to tubes that are rigid and hollow with a complete loss of epithelial folds. Findings at salpingoscopy appear to be predictive and prognostic of pregnancy outcome.
FIGURE 21.8 Tubal cannulation (same patient as in Fig. 21.7). The occlusion has been relieved, and the tube has opacified. (From Gomel V, Taylor PJ. Diagnostic and operative gynecologic laparoscopy. St. Louis, MO: Mosby, 1995:109, with permission.)
Microsalpingoscopy has been used to examine the integrity of the tubal mucosa more closely. Microsalpingoscopy uses an endoscope that has magnification capability enabling visualization of individual cells of the tubal epithelium. The epithelium is stained with concentrated methylene blue solution injected through the cervical cannula. It is then assessed under magnification. The level of staining of the nuclei of the tubal cells is inversely proportional to functional integrity of the mucosa. This technique is at present investigational; thus, its value remains to be determined.
Falloposcopy
Falloposcopy is a transvaginal microendoscopic technique aimed at exploring the entire length of the tube, especially the intramural and isthmic segments. A linear eversion catheter system has been used to perform falloposcopy without the need for preliminary hysteroscopy and anesthesia. The patient requires premedication to decrease the discomfort associated with the procedure.
The system includes a linear eversion catheter with an outer plastic polymer body 2.8 mm in diameter and a sliding stainless steel inner body 0.8 mm in diameter, containing a 0.48-mm fiberoptic endoscope. The tip of the outer catheter is angulated so it can be directed toward the uterotubal junction. Once the tubal ostium is identified, the tip of the catheter is held against the ostium. The pressure within the eversion catheter is increased, and the membrane of the eversion catheter is introduced into the fallopian tube for a short distance. The endoscope is pushed down the lumen to the tip of the introduced catheter. The image obtained is displayed on a high-resolution color monitor. The eversion catheter and the endoscope it houses are advanced in the described manner, slowly and gradually, with the endoscope always maintained within the inverting membrane to prevent the tip of the endoscope from piercing the tubal wall.
Falloposcopy may be used as a means of tubal catheterization and has the added benefit of permitting assessment of the lumen of the tube, especially its intramural and isthmic segments. Kerin et al. proposed a classification based on a scoring system that takes into account the degree of tubal patency, tubal dilatation, epithelial and vascular changes, intratubal adhesions, and other abnormal findings.
This technique, which requires expensive disposable equipment, did not gain clinical acceptance.
Tests Designed to Assess Tubal Function
Salpingography, salpingoscopy, and falloposcopy are designed to assess tubal patency and morphology. Many procedures designed to assess tubal function have been proposed but did not attain clinical acceptance.
Early attempts at using radioactive microspheres as oocyte surrogates to evaluate egg transport did not appear to be clinically valuable. Uher et al. have introduced biodegradable microspheres into the pouch of Douglas by either cul-de-sac puncture or laparoscopy. These microspheres, which were recognizable by fluorescence, were collected in a cervical cup 24 hours later. Microspheres were present in the cup in 66% of 69 patients with unexplained infertility and in 100% of 20 patients with male factor infertility.
Radionuclide Hysterosalpingography
Radionuclide HSG is a scintigraphic procedure designed by Brundin and colleagues to evaluate the spontaneous pro-ovarian transport of microspheres in the genital tract. A solution containing 99mTc-labeled albumin microspheres is squirted toward the external cervical os of the cervix and upper vagina. The subsequent transport of the microspheres through the cervix, uterus, and tubes is monitored by a gamma camera equipped with a pinhole collimator. The pro-ovarian transport of microspheres depends on both the anatomic patency and the functional integrity of the uterus and oviducts. This test is designed to assess primarily the sperm transport function of the uterus and tubes. This technique is still experimental, but preliminary work reported by Lundberg et al. indicates it is not predictive of fertility potential.
Laparoscopy
Laparoscopy permits direct visualization of the peritoneal cavity, pelvis, and internal reproductive organs. It can also test tubal patency with the use of concomitant chromopertubation. It is the most accurate way to identify periadnexal adhesive disease and endometriosis. Laparoscopy also provides the necessary surgical access to perform surgical procedures. Hysteroscopy and salpingoscopy, when indicated, may be performed during the same setting. Laparoscopy is an invasive procedure that usually requires a general anesthetic. It is important to be reminded that most of the major vascular and bowel injuries occur with the initiation of laparoscopy, during the introduction of the Veress needle, principal trocar, and ancillary trocars.
There are those who argue in favor of an immediate laparoscopy bypassing HSG. An analysis of 18 published series demonstrates good congruence between laparoscopic and HSG findings. These collected data indicate that the sensitivity and specificity of HSG are approximately 76% and 83%, respectively. These studies represent a selected population of patients in whom the prevalence of tubal occlusion was 38%. This prevalence figure falls to 10% in studies of large numbers of unselected patients, which reflects more accurately the general population. If the sensitivity and specificity figures reported above are applied to a hypothetical group of patients with a 10% rate of tubal occlusion, only 3% of those with a normal HSG will have an abnormal laparoscopy. Thus, the laparoscopy will be normal in approximately 97% of patients. These data support delaying endoscopy for 4 to 6 months in those with an apparently normal HSG, except in women of older reproductive age.
Based on the preceding information, a well-performed HSG should be the preliminary investigation for tubal factor infertility. This approach permits the identification of (a) uterine anomalies and lesions; (b) cornual occlusion or lesions, even in the presence of cornual patency; (c) distal tubal occlusion; and (d) assessment of intratubal architecture. This information is of paramount importance to the surgeon at the time of laparoscopy, especially if the condition is amenable to laparoscopic surgery, which should be performed in the same setting. Indeed, with the advanced imaging techniques and newer therapeutic modalities available today, laparoscopy, solely for the purpose of diagnosis, should be rarely required.
Laparoscopic Survey
A thorough laparoscopic survey will identify any adhesions, along with their extent and nature; reveal the presence of endometriosis, its extent, and other abdominal and pelvic lesions; and permit assessment of the uterus, ovaries, and tubes. The information yielded by the prior HSG and this survey enable the surgeon to undertake reconstructive laparoscopic surgery and to recommend surgery by open access or the use of assisted reproductive technologies. These will be discussed later.
A bimanual pelvic examination is performed on the anesthetized patient. The cervix is then exposed, and a uterine cannula is attached to the cervix. In addition to permitting intraoperative chromopertubation, the cannula enables manipulation of the uterus and enhances laparoscopic visualization.
Once the laparoscope is inserted, the entire peritoneal cavity is inspected. Inspection commences in the upper abdomen and includes the liver and the undersurface of the diaphragm, which are inspected in a clockwise fashion. Particular attention is then focused on the lower abdomen and pelvis. To improve access to the pelvis, the patient is placed in the Trendelenburg position. The bowel is displaced upward, initially by manipulating the uterus and thereafter by using a probe or other appropriate instrument inserted through a second puncture, usually placed suprapubically in the midline, or in one of the lower quadrants.
A general panoramic inspection of the pelvis is performed with the laparoscope at some distance from the pelvic organs. This permits a general impression to be formed. Subsequently, a systematic survey is performed. The laparoscope is advanced; appropriate manipulation of the uterus, with the cervical cannula, and of the suprapubic probe enhances visibility of specific organs. The uterus is assessed, along with its anterior surface, the vesicouterine pouch, and the dome of the bladder.
The uterus is then moved into anteversion. The fundus and the posterior surface of the uterus, the uterosacral ligaments, and the pouch of Douglas are thoroughly inspected. If fluid is present in the pouch, its nature is noted. It may be necessary to aspirate the fluid to inspect the underlying peritoneal surfaces. To aspirate the fluid, the probe is replaced by a suction cannula, which can also be used as a manipulating probe. The aspirated fluid can be sent for microbiologic or biochemical studies as deemed necessary. The cul-de-sac and the lateral peritoneal surfaces are inspected for any scarring or evidence of endometriosis. In addition, the peritoneum over the pararectal spaces and over the sacrum should be evaluated.
The extent and type of pelvic and periadnexal adhesions are noted (Fig. 21.9). Each tube and ovary and the respective pelvic sidewalls are thoroughly scrutinized. Once the anterior surface of the ovary is inspected, the ovary is elevated and flipped upward with the probe, exposing its posterior surface, the fossa ovarica, and the pelvic sidewall down to the level of the uterosacral ligament, which are assessed. The tube is inspected from the proximal to the distal end. Attention is paid for any evidence of fusiform swelling at the uterotubal junction (which is usually caused by salpingitis isthmica nodosa or endometriosis); the distal end of the tube is scrutinized for the presence of fimbrial phimosis or frank distal tubal occlusion (hydrosalpinx) (Fig. 21.10). The ovarian fimbrial relation is assessed, and the fimbriae are viewed en face. Once the other adnexa are similarly assessed, chromopertubation is performed by injection of dilute indigo carmine or methylene blue solution through the uterine cannula. The passage of the dye solution is followed through the tube, and the nature of the spill is examined by viewing the fimbriae to determine the presence of prefimbrial phimosis or fine fimbrial adhesions that may impede ovum pickup.
FIGURE 21.9 Laparoscopy. Periadnexal adhesions cover and fix the distal half of the fallopian tube.
Abdominal, pelvic, and periadnexal adhesions may impede laparoscopic access to the pelvis and the adnexa; this may necessitate preliminary adhesiolysis.
Hydroculdoscopy (Fertiloscopy)
Hydroculdoscopy was introduced to visualize the fallopian tubes, ovaries, and the cul-de-sac of Douglas. The technique is a modification of the traditional “culdoscopy,” which has been largely abandoned. It was introduced as a diagnostic technique to replace laparoscopy in the investigation of infertile women, hence the name “fertiloscopy.”
With the patient properly positioned, a bimanual examination is carried to examine the pelvic organs and confirm that the pouch of Douglas is free. The posterior fornix of the vagina is exposed, and the pouch of Douglas is entered using a Veress-type needle. Once the needle is appropriately placed, 200 to 250 mL of saline solution is introduced into the pouch of Douglas through the Veress needle. A trocar/cannula that permits the introduction of a small-caliber endoscope or a “fertiloscope” is then inserted.
The procedure permits the visualization of the pouch of Douglas, the posterior surface of the uterus, the fallopian tubes, and ovaries. Tubal patency can be ascertained by the introduction of a dilute methylene blue solution into the uterine cavity, through an appropriate cannula. If tubal damage is suspected, a salpingoscopy may be performed during the same procedure.
FIGURE 21.10 Laparoscopy. Thin-walled dilated hydrosalpinx with extensive pelvic and periadnexal adhesions.
FIGURE 21.11 Fertiloscopy: views of ovarian drilling via hydroculdoscopy using a bipolar electrode.
Initially introduced as a diagnostic tool, the technique has also provided surgical access for certain therapeutic procedures including minor adhesiolysis and ablation of minor endometriotic lesions; it also permits performance of ovarian drilling.
The first ovarian drilling by hydroculdoscopy was performed in France in 1999 at the Antoine Beclère Hospital by Hervé Fernandez, introducing a bipolar Versapoint probe into the pouch of Douglas through a site lateral to that of the endoscope. The patient was markedly obese and was found to have polycystic ovaries as reported by Fernandez in 2001 (Fig. 21.11). Ovarian drilling using this access has since been performed in many centers; the reported results appear similar to those performed by laparoscopy.
It is evident that the procedure cannot be undertaken if the cul-de-sac of Douglas is occluded. The view obtained with hydroculdoscopy is localized and very different from the panoramic view obtained by laparoscopy; furthermore, it does not offer the wide surgical applications that laparoscopic surgical access offers. However, it does have a role in replacing a laparoscopy in appropriately selected patients.
TREATMENT OF TUBAL INFERTILITY
Until the mid to late 1980s, reproductive surgery was the main option of treatment for the infertile woman with damaged fallopian tubes to achieve a pregnancy. This changed dramatically due to significant progress realized in IVF in the decade of the 1990s. The Society for Assisted Reproductive Technology reports rates in the United States progressed from 12.3% of births per initiated cycle in 1990 to 25.4% in 1999, 2004. The 1990s also witnessed the introduction and acceptance of intracytoplasmic sperm injection (ICSI), which proved to be a panacea in the treatment of male infertility.
There are now two realistic treatment options for the treatment of tubal and peritoneal factor infertility: reconstructive surgery and assisted reproduction techniques (ART). Surgery also experienced significant progress and development in the last three decades. Furthermore, presence of a credible alternative with IVF permits the reproductive surgeon to operate on cases with a better prognosis, which was not the case before the end of the 1980s. We have known for a long time that one of the important factors influencing surgical outcome is the degree of tubal damage. Operating on patients with better prognosis translates in superior outcomes as has been well demonstrated. Surgery and IVF must not be regarded as competitive but rather as complementary treatments necessary to achieve the desired goal. The choice of treatment is ideally dependent on multiple considerations, both technical and nontechnical.
Technical considerations refer to proper assessment of the clinical findings of the couple. It is evident that IVF is the only treatment option for women with inoperable fallopian tubes and tubal disease coincident with another important fertility factor, such as male factor infertility. Not infrequently, a woman will require reconstructive surgery to make IVF possible or more frequently to increase the success rate with IVF. Some patients are better served with surgery.
The provision of accurate information regarding both IVF and tubal surgery is essential in the decision-making process of the couple. The couple must be given the live birth rate per cycle of IVF, the cumulative birth rate after multiple cycles of treatment, and the potential complication rates, including multiple pregnancy, abortion, and ectopic pregnancy. In addition, the effect of frozen embryo replacement on the cumulative pregnancy rate must be considered in the analysis. Similar information must also be provided regarding reconstructive tubal surgery. It is imperative that such figures reflect the experience of the center in which treatment will be performed and not those reported in international journals.
Nontechnical considerations include age, cost, and the wishes of the couple. Female fecundity is adversely affected by age. Fecundity begins to decline at approximately 31 years of age. This trend has been observed both in “normal” couples and in those with unexplained infertility. This decline becomes even more evident after 35 years of age. In women of advanced reproductive age, the marked decline of fecundity rate per cycle of IVF must be weighed against the fact that reconstructive surgery offers multiple cycles during which conception can occur. Therefore, although the younger woman may consider surgery for a given condition, those in more advanced reproductive age, 37 and over, may be advised to consider IVF first.
Health insurance coverage and the cost of the procedure, depending on the jurisdiction, and the resources of the couple play important roles in the decision-making process. Another, often underestimated potential factor is the economic impact of a multiple pregnancy, which occurs much more frequently with IVF.
The perceptions and wishes of the couple regarding treatment options depend on many influences, including their own values and ethical views. There may be disagreement between partners. The physician should provide detailed information for the couple as clearly and accurately as possible and should abstain from interfering with their decision making except to clarify misunderstandings and misinterpretations. The physician must advise against active treatment when the prognosis is poor because treatment with essentially no chance of success cannot be justified.
The significant improvement in the outcomes of ART was largely due to the simplification of techniques, both clinical and laboratory, progress made in cryopreservation, and the replacement of multiple embryos. Another important factor was the commercialization of these services, which proved lucrative. The number of IVF programs in the United States increased from 267 in 1994 to 461 in 2004, and the number of cycles performed quadrupled during the intervening 20 years from approximately 32,000 to 128,000, which represented a $1.25 billion business. During the same period, there has been a significant decline in the use and teaching of reconstructive infertility surgery. In vitro fertilization started increasingly to be offered, as primary treatment option, in most cases of tubal factor infertility. These changes have occurred despite the acceptance of laparoscopic access to perform many of the reconstructive tubal operations and the use of minilaparotomy incision for more complex anastomotic procedures, both of which have become day care procedures. Concerned with this trend, as early as 1992, we emphasized that both therapeutic options had a place, that treatment should be individualized based on the clinical findings and circumstances of the couple, and that these two options were not competitive but rather complementary. We are of the same opinion today.
Assisted reproduction has revolutionized reproductive medicine; we are in full recognition of this fact. We also believe that reproductive surgery has an important place in the treatment of tubal infertility and in assisting to improve ART outcomes in those who need preliminary surgery. We are gratified to find in ASRM’s “Committee Opinion: Role of Tubal Surgery in the Era of Assisted Reproductive Technology” published in March 2012 support for many opinions we have held about the role of reproductive surgery since early 1990s, when ART results started to show significant progress. We strongly recommend the reader to obtain a copy of this document.
In Vitro Fertilization and Embryo Transfer
Reconstructive tubal surgery was the only treatment option for infertile women with damaged fallopian tubes, until the recent past. This is no longer the case due to significant improvement in outcomes and much wider availability of IVF and ART that provide such couples with a realistic therapeutic alternative.
Data collected prospectively for ART treatments during the year 2009, the last year for which there was a detailed analysis available at the time of writing, from 441 clinics in the United States provided the following outcome data, which were tabulated by the Centers for Disease Control and Prevention (CDC) in 2011. There were 146,244 cycles of ART in 2009. Of these 102,478 (70.1%) were fresh nondonor and 26,069 (17.8%) were frozen nondonor cycles; 11,038 (7.5%) were fresh donor and 6,659 (4.6%) were frozen donor cycles. The majority of the women treated (61.1%) were 35 years of age and more, and only 38.9% were under 35. The overall live birth rate per cycle started in the fresh nondonor group was 30% and in the frozen nondonor group was also 30%. The birth rate was the same in 2010. In cycles that resulted in a clinical pregnancy, 81.3% resulted in live births. Of live births, 69.5% were singleton births and 28.9% were twins and 1.6% triplets or greater multiples.
Of note, a 2013 report from the CDC indicates the number of ART cycles performed in the United States has more than doubled from 64,036 cycles in 1996 to 147,260 in 2010. More important is the improvement in the overall live birth rate per cycle started from 12.3% in 1990 to 30% in 2010.
Intracytoplasmic sperm injection represents a very important progress in ART; it has proven to be a panacea in the treatment of male infertility. As early as 2003, it was demonstrated that in male factor infertility, the use of ICSI is associated with a success rate that almost equals that of standard IVF in the absence of male factor (Table 21.2). Furthermore, since the same time there has been an increasing use of ICSI for fertilization of oocytes even in couples without a male factor. In the United States in 2010, ICSI was used in 66% of IVF cases.
The outcome of both standard IVF and ICSI is adversely affected by the age of the female partner. There is a linear decline after age 35 in both the overall live birth rates and the implantation rate of embryos as clearly evident in Table 21.3 that summarizes the US IVF results for the year 2010.
There has been an increase in the use of frozen nondonor embryos and improvement in outcomes. Frozen nondonor embryos were used in approximately 18% of all ART cycles performed in 2009, compared to 14% in 2003. The rate of thawed embryos resulting in live births is 30.3%, similar to the overall rate with fresh nondonor cycles, which is quite impressive. Although replacement of frozen thawed embryos improves the cumulative success rate for a couple, the overall net effect remains limited because not all of the cycles provide spare embryos and not all of the frozen embryos withstand the thawing process.
In vitro fertilization and embryo transfer is not risk free, especially in stimulated cycles. Although uncommon, ovarian hyperstimulation, bleeding, and infection can occur. Pregnancies resulting from IVF have an abortion rate of approximately 17%. The overall tubal pregnancy rate is approximately 1% to 2% of ART cycles. A 1991 study from our center by Zouves et al. demonstrated a tubal pregnancy rate of 2.6% (of clinical pregnancies) among IVF patients without tubal factor infertility. However, this rate was 12% in patients with prior tubal disease and tubal surgery.
Assisted reproductive technology procedures are associated with a significant increase in the rate of multiple pregnancies (relative risk [RR] >20). The Centers for Disease Control (CDC) Assisted Reproductive Technology report for 2009 indicated that of the resulting live births, only 69.5% were singletons, 28.9% twins, and 1.6% triplets or higher order. These results show a modest improvement compared to those of 2003, which were 65.8%, 31.0%, and 3.2%, respectively. The high rate of multiple pregnancies is due to the number of embryos transferred. Since transfer of more embryos improves the overall pregnancy rate, there is a temptation to do so. In Europe, where in many jurisdictions the number of embryos to be transferred is limited, both the live birth outcomes and the multiple pregnancy rates are lower (Table 21.4).
The high rate of multiple births has a tremendous personal and social impact. Perinatal morbidity and mortality are markedly increased in pregnancies complicated by multiple gestations. The cost, both emotionally and financially, of caring for premature or abnormal children is great. It was demonstrated that monofetal pregnancies also are associated with elevated risk as compared with non-ART singleton pregnancies; more than 10% of monofetal births are preterm, and the perinatal mortality rate (approximately 19 per 1,000) is higher than non-ART singleton pregnancies. This has not changed; the 2009 US outcomes for fresh nondonor ART cycles indicate preterm birth rates of 11.6% for singletons from single-fetus pregnancy, 19.0% for singletons from multiple-fetus pregnancy, 60% for twins, and 97.5% for triplets or more. The percentages of low-birth-weight infants for the same group were 8.7%, 16.7%, 56.1%, and 92.1%, respectively.
A 1994 study by Rufat et al. from France that analyzed a total of 1,637 IVF pregnancies resulting in 1,263 deliveries and 1,669 live born or stillborn children demonstrated a preterm birth rate of 22.7% of all deliveries and 12.2% of singleton deliveries compared with 5.6% among all deliveries in France, and 34.7% of babies weighed less than 2,500 g compared with 5.2% among all deliveries in France. The rates of perinatal, neonatal, and infant mortality were higher than the national average. Another important study by Bergh et al. from Sweden compared the obstetric outcomes of babies conceived with IVF (n = 5,856) to all babies born in the general population during a span of 13 years (1982-1995) demonstrated that children resulting from IVF conception had increased rates of low birth weight (RR = 5), major malformations (RR = 1.4), cerebral palsy (RR = 4), and death (RR = 2). Such elevated personal and societal costs must be considered when embarking on any ART procedure.
TABLE 21.3 ART Results in the United States for the Year 2000a
AGE
<35
35-37
38-40
41-42
42-44
>44
Implant %
36.5
26.9
17.7
9.6
4.2
1.7
Live birth %
41.5
31.9
22.1
12.4
5.0
1.0
Twins%
32.9
27.3
21.6
15.0
8.1
2.3
Triplet+%
2.6
3.1
3.7
3.0
0.6
2.3
aPercentage of live births per cycle; 147,260 cycles from 443 clinics. Intracytoplasmic sperm injection in 66% CDC Reproductive Health; www.cdc.gov/art/ART.2010
TABLE 21.4 ART Results in Europe for the Year 2007
DELIVERY/OPU %
IVF
ICSI
MULTIPLE PREGNANCY
Europe
21.1
20.2
22.3
France
19.2
20.5
19.3
Germany
16.0
16.1
21.8
Italy
15.2
14.3
23.4
United Kingdom
26.4
27.5
17.9
From de Mouzon J, et al. Assisted reproductive technology in Europe, 2007: results generated from European registers by ESHRE. Hum Reprod 2012;27:954, with permission. Copyright 2012, Oxford University Press.
REPRODUCTIVE SURGERY
Reproductive surgery encompasses much more than procedures designed to improve fertility, as understood by some. In fact, in addition to fertility-promoting procedures, such as reconstruction of fallopian tubes and salpingo-ovariolysis, it includes all surgical procedures performed on the pelvic organs of female children, adolescents, and childbearing age women, and not only when performed in those who present with infertility. It must be noted that “female infertility is frequently caused by misdiagnosis or delayed diagnosis and treatment of acute conditions in young and/or reproductive age women, such as PID, ectopic pregnancy, appendicitis, etc. It is also caused by surgical procedures that are unnecessary, unnecessarily extensive and/or traumatic, resulting in damage to or loss of normal reproductive organs and development of post-operative adhesions.” These observations clearly demonstrate the need to stress the importance of reproductive surgery, and to avail surgeons and especially gynecologists with training opportunities in this field.
Surgery was the only available therapeutic option for infertility caused by tubal and peritoneal factors until the mid-1980s. Traditional surgical techniques often yielded poor outcomes frequently as a result of extensive postoperative adhesions. In my textbook “Microsurgery in Female Infertility” published in January 1983, I wrote “I have vivid recollections of the frustration and disappointment I felt, when assisting as a resident at second-look laparotomies for removal of prosthetic devices such as Mulligan hoods, at finding extensive adhesions in the peritoneal cavity; with bowel, omentum, and the internal genitalia adherent to one another. Extensive adhesiolysis and separation of structures were often necessary in order to visualize the oviducts and remove the prosthetic devices left in situ during the prior reconstructive operation.”
We have had important developments in the field of reproductive surgery in the past four decades. Gynecologic microsurgery was introduced in the early 1970s; simultaneously, laparoscopic surgical access was used for tubal reconstruction, especially in distal tubal disease. Used initially by open access, microsurgical tenets were also applied in procedures performed by laparoscopic access. The use of magnification and especially microsurgical principles yielded significantly improved outcomes, particularly in tubal anastomosis.
The use of laparoscopy for surgical access provided the advantages that are now well recognized: less postoperative discomfort and analgesic requirement, shorter hospital stay and postoperative recovery period, improved cosmetics, and frequently reduced costs. Many laparoscopic interventions became ambulatory procedures, the patient being able to return home the same day. It also did not take long to realize that this mode of surgical access yielded results that were not dissimilar to those obtained via laparotomy, provided of course the technique used was the same. Experience with laparoscopy permitted modification of open interventions for more complex cases, such as tubocornual anastomosis, where a small minilaparotomy incision replaced a formal laparotomy, permitting such procedures also to be performed on ambulatory basis.
The overall risks of reconstructive tubal surgery are small and include the recognized complications of anesthesia and surgery. Surgery, if successful, offers multiple cycles in which to achieve conception and the opportunity to have more than one pregnancy. The abortion rate subsequent to reconstructive tubal surgery is not increased over that of the normal population. The live birth and ectopic pregnancy rates depend on the specific nature of the tubal disease and the extent of tubal damage.
MICROSURGERY
Principles
Microsurgery has been defined as “surgery under magnification.” In fact, magnification is only a single facet of microsurgery, which embraces a broad concept of tissue care designed to minimize tissue damage and the use of measures that prevent and/or decrease an acute inflammatory reaction in the peritoneal cavity. These are measures applicable to both open and laparoscopic access; they include the following:
Use of a delicate, atraumatic technique designed to minimize tissue injury, which in addition includes judicious use of electrical or laser energy and frequent intraoperative irrigation with heparinized lactated Ringer solution to keep serosal surfaces moistened to prevent desiccation
Prevention of foreign body contamination of the peritoneal cavity
Obtaining meticulous pinpoint hemostasis, using a microelectrode, minimizing adjacent tissue damage.
Complete excision of abnormal tissues
Identifying proper cleavage planes and precisely align and approximate tissue planes with fine nonreactive sutures
Performing a thorough pelvic lavage using heparinized lactated Ringer solution at the close of the procedure to remove from the peritoneal cavity any blood clots, foreign body, or debris that may be present.
Additional measures help to decrease acute inflammatory reaction. Specifically before the close of the procedure, we leave 300 to 500 mL of lactated Ringer solution with 500 mg of hydrocortisone succinate in the peritoneal cavity. General measures assist in this regard: use of preoperative and postoperative antiinflammatory medications, for example, Voltaren suppository, infiltration of a local anesthetic before placing the incision, and the administration of a single dose of prednisone postsurgery.
Magnification, with an operating microscope or with an endoscope, provides many advantages; it permits prompt identification of abnormal morphologic changes, recognition and avoidance of surgical injury, and application of the preceding principles with the use of fine instruments and suture materials. Microsurgery is a surgical attitude as much as a technique.
In the late 1960s, Swolin used magnification with loops— electrosurgery with a fine electrode for the reconstruction of distal tubal occlusion. In addition, he strived to reduce peritoneal trauma by keeping the operative site moistened by frequent irrigation. In Vancouver, we expanded the microsurgical techniques; using an operating microscope, we applied them in the correction of pathologic cornual and midtubal occlusions (tubocornual anastomosis and tubotubal anastomosis) and in reversal of sterilization. This approach permitted us to perform tubocornual anastomosis as opposed to a tubouterine implantation—which was the standard procedure at the time—in cases of pathologic cornual occlusion. An anastomosis in such cases preserves tubal integrity and thus is a more physiologic approach of tubal reconstruction.
Microsurgery, in fact, finds its ultimate application in tubal anastomosis. The use of magnification, microsurgical instruments, and sutures enables the recognition of subtle abnormalities—even in the presence of tubal patency, excision of abnormal tissues, and correct alignment of the tubal segments and precise apposition of each layer. Indeed, the application of microsurgery has significantly improved the outcome of such procedures. However, in the treatment of distal tubal occlusion, any improvement attributable to the use of microsurgical techniques has been relatively modest, despite the reduction in postoperative adhesions and improved tubal patency rates.
The introduction of microsurgery into gynecology has yielded benefits much greater than simple improvement in the outcome of certain fertility operations. It created a great awareness of the effects of peritoneal trauma and the resulting postoperative adhesions. It also promoted the use of conservative approaches that are now considered standard of care for women undergoing surgical treatment for benign gynecologic disease. These are additional and important reasons to continue to teach reconstructive infertility surgery. Thus, microsurgery is a surgical philosophy, a delicate surgical approach designed to minimize peritoneal trauma and tissue disruption and prevent postoperative adhesions while increasing the accuracy of the procedure and improving the outcome.
Microsurgical techniques are equally applicable to both open and laparoscopic access. We demonstrated the applicability of microsurgical techniques by laparoscopy for adhesiolysis, salpingo-ovariolysis, fimbrioplasty, and salpingostomy as early as the mid-1970s. Microsurgical techniques must be used in all reproductive operations, irrespective of the mode of access. This is especially important today because most such procedures are performed by laparoscopy and minilaparotomy.
The laparoscope also provides a degree of magnification. Bringing the distal end of the laparoscope close to the area of interest, one achieves excellent visibility and illumination. There are microsurgical advantages inherent to laparoscopic access. Operating within a closed peritoneal cavity eliminates the need to use packs and prevents the introduction of foreign materials such as lint and talcum powder. The pressure effect of the pneumoperitoneum diminishes venous oozing and permits spontaneous coagulation of minor vessels. It is possible to perform intraoperative irrigation to expose any bleeding vessels and keep tissues moistened. Fine electrodes can also be used to achieve precise electrosurgical hemostasis. Like microsurgery, laparoscopic procedures are performed with few instruments. The instrument manufacturers have at last recognized the need for proper microsurgical instruments for laparoscopy; they are now readily available.
We must stress, however, that the large volume of gas insufflation necessary in operative laparoscopy causes desiccation of the mesothelial cells that line the peritoneum; furthermore, it has been recognized that CO2 is toxic to mesothelial cells. This phenomenon may enhance the development of postoperative adhesions. Hypoxia causes retraction of the mesothelial cells exposing the extracellular matrix. This causes substances and cellular elements that enhance adhesion formation or decrease repair to enter the peritoneal cavity. Both animal and more recently human work demonstrated that the noxious effects of CO2 pneumoperitoneum may largely be avoided by modifying the gas mixture by adding small percentages of O2 and N2O, keeping the gas mixture fully humidified and at a temperature of 31°C.
Major Equipment and Surgical Instruments
The major equipment includes an electrosurgical generator suitable for both general and microsurgical work and, depending on the access mode used, either an operating microscope or appropriate laparoscopic equipment. Most of the good modern electrosurgical generators can be used for both general work and microsurgical work. Such generators are now standard equipment in most operating rooms.
When access to the pelvis is achieved by laparotomy or minilaparotomy, magnification is obtained by the use of an operating microscope or loops. Loops provide low levels of fixed magnification. It is difficult to work with loops that provide a magnification greater than four times. They are suitable for use only in simple short procedures and are quite helpful when used to divide adhesions or excise endometriotic lesions located deep in the pelvis. Magnification is best obtained with an operating microscope that provides magnification ranges from 2 to 40 times; coaxial illumination of a constant visual field enables precise focusing and change of levels of magnification. In gynecologic microsurgery, an objective lens with a focal distance of 250 to 300 mm allows for a suitable working distance under the lens. The microscope can be mounted on the floor or ceiling. Focusing, varying the level of magnification, and other functions of the microscope can be manual or motorized. The latter version is preferable because changes can be readily accomplished through controls on a foot pedal while the surgeon’s hands remain in the operative field. Most modern operating microscopes are equipped with beam splitters, which permit the fitting of two pairs of binoculars so that both the surgeon and the assistant can simultaneously view the operative field. A miniature television camera can also be fitted to the same beam splitter, which enables the operating room personnel to follow the surgery on the monitor and allows video recordings of the procedure to be made.
When laparoscopic access is used, a good laparoscope equipped with a high-resolution mini TV camera and a highresolution monitor is required. The laparoscope does not offer the stereoscopic vision and the excellent depth of field that the operating microscope provides. Nonetheless, first generations of three-dimensional laparoscopic equipment and magnification devices have been produced. Progress is under way.
FIGURE 21.12 The working tips of the principal microsurgical instruments: plain forceps, scissors, and needle holder.
Good microsurgical instruments for open access have been present since the 1970s. Microsurgical instrument for laparoscopic access became available in the last two decades. Although their shapes are obviously different, their functions are similar. The basic microsurgical instruments are few and include plain and toothed platform microforceps, microscissors, microneedle holder, and straight scissors and/or a microblade to transect the tube (Fig. 21.12). The forceps have rounded tips with a shaft designed so that they, like the scissors and needle holder, have good ergonomics and can be used comfortably. Teflon-coated probes with variable rounded tips are used for retraction.
Electromicrosurgery requires the use of a true insulated microelectrode of 100 or 150 µm in diameter with a free pointed conical tip. The microelectrode is connected to the handle of the electrosurgical unit with an adaptor. A rocker switch mounted on the handle allows delivery of current in cutting, coagulating, or blend modes. Irrigation can be performed with an appropriate laparoscopic irrigator. For open procedures, a device with a fingertip control (Gomel irrigator) (Fig. 21.13) is commercially available and enables accurate irrigation.
FIGURE 21.13 The Gomel microsurgical irrigator. An intravenous cannula has been attached to the tip of the irrigator. Fingertip control of the sliding valve permits one to initiate or stop irrigation.
Immediate Preoperative Preparation
Before the induction of anesthesia, the surgeon must ensure that all necessary equipment and instruments are present and in working order. After the induction of anesthesia, the patient’s bladder is catheterized with a Foley catheter, which is connected to continuous drainage. If intraoperative chromopertubation is required, either a pediatric Foley catheter or an appropriate uterine cannula is introduced through the cervix and fixed in place. The catheter or cannula is connected either directly or by means of an extension tube to a syringe filled with dilute dye solution.
When open surgical access is used, anteversion and elevation of the uterus can be achieved either by selecting a suitable uterine cannula or by packing the vagina. With the latter option, a pediatric Foley catheter should first be placed in the uterine cavity if intraoperative chromopertubation is desired.
Surgical Access
As indicated earlier in the text, many reconstructive tubal operations can be performed by laparotomy, minilaparotomy, or laparoscopic access. The selection of the specific access route depends on the nature of the lesion, the type of procedure required, and the skill of the surgeon. The aim is to select the access route that will yield the best outcome for the patient.
Many reconstructive operations, especially those for distal tubal disease, can be efficiently performed by laparoscopic access. Because of the advantages inherent in undertaking such a procedure at the time of the initial diagnostic laparoscopy, it is preferable that a surgeon trained in this type of surgery perform the initial laparoscopy.
Access by Laparoscopy
Once a proper pneumoperitoneum is obtained, the principal trocar and cannula are inserted (usually intraumbilically), the trocar is removed, and the laparoscope is introduced through the cannula. The details of performing a laparoscopy will not be described in this chapter. A thorough laparoscopic survey is performed as described earlier in this text, and the nature and extent of the tubal and pelvic lesions is assessed. The information yielded by the prior complemented by the laparoscopic findings and the status of the other fertility parameters, permits the surgeon to select the therapeutic approach that is best for the patient.
The laparoscopic survey requires the establishment of a secondary portal for the introduction of a probe or other appropriate instrument. This ancillary portal is placed suprapubically in the midline or in one of the lower abdominal quadrants. The undertaking of reconstructive surgery will necessitate the establishment of additional portals of entry. These are placed, depending on the clinical findings and the procedure to be performed, at sites that permit easy access to the operative field.
Open Access: Minilaparotomy
In reconstructive tubal surgery, a transverse suprapubic incision is the type used most often. Since 1985, we have used a small, minilaparotomy, suprapubic transverse or vertical (if a midline or paramedian scar is present) incision to gain access to the pelvis. The length of this minilaparotomy incision is usually 4.5 to 6 cm. The prior pelvic findings and especially the depth of the patient’s subcutaneous adipose layer determine the length of the incision. The site of the proposed incision is infiltrated with a long-acting anesthetic agent, such as 0.25% bupivacaine (Marcaine) solution. A transverse suprapubic incision is made and extended down to the fascia. The subcutaneous fat is dissected over the fascia, in the midline upward and downward. The fascia is then incised vertically in the midline. The recti muscles are separated in the midline, and the peritoneum is incised vertically, with the incision curbed laterally at the lower end to avoid the bladder. The subcutaneous tissues are reinfiltrated with the same solution before closure of the skin incision. Thereafter, a bilateral ilioinguinal nerve block is established. The small size of the incision; the lack of bowel manipulation, along with gentle handling of tissues during the procedure; and the use of local anesthesia reduce postoperative discomfort and analgesia requirements. This approach permits prompt mobilization of the patient and discharge from the hospital or surgical center usually on the same day. These patients return to normal activity almost as rapidly as those who have had their procedures performed laparoscopically.
It is essential that the surgical personnel thoroughly wash their gloves after they have been put on and again before making the peritoneal incision. Once the peritoneal cavity is entered, retraction is obtained with a disposable device that provides both wound protection and circumferential retraction with maximal exposure for the incision size. Varying sizes of such devices are available from many manufacturers and are preferable to standard retractors. Pads soaked in heparinized (5,000 U/L) lactated Ringer solution can be introduced into the pouch of Douglas to further elevate the uterus and isolate the bowel already displaced by a mild (10- to 15-degree) Trendelenburg tilt.
Once the surgical site is well exposed, the operating microscope is positioned. Although the operating microscope can be draped, we have not found this to be necessary, particularly if foot pedals control the microscope. Intraoperative irrigation is performed with heparinized lactated Ringer solution in an intravenous bag that is elevated and connected with intravenous tubing to a Gomel microsurgical irrigator (Fig. 21.12). This enables periodic irrigation of the exposed peritoneal surfaces and ovaries to prevent desiccation and to visualize individual bleeders.
Pelvic Lavage
At the close of a reconstructive procedure, irrespective of the type and the mode of access, the operative site is inspected to ensure that complete hemostasis has been achieved. Any bleeding vessels are electrodesiccated. A thorough pelvic lavage is then performed with the irrigation solution until the fluid remains clear. Pelvic lavage serves to remove from the peritoneal cavity any blood clots or other debris that may be present.
When laparoscopic access is used for the procedure, underwater examination of the operative site may be performed. When the irrigation fluid remains clear, the pneumoperitoneum pressure is reduced and the region inspected with the distal end of the laparoscope under the surface of the fluid. This permits prompt recognition of any small bleeding vessels, which can be desiccated with the use of a microelectrode or microbipolar forceps.
Once the irrigation fluid is completely suctioned out of the pelvis, some investigators leave varying amounts of physiologic solution in the peritoneal cavity to reduce postoperative adhesions. We use 300 to 500 mL of lactated Ringer solution to which 500 mg of hydrocortisone succinate is added. There are promising new products designed to prevent adhesion formation that are easy to apply by both open and laparoscopic access; these are currently undergoing clinical trials. The topic of ancillary measures for adhesion prevention is outside the purview of this chapter and will not be discussed further.
SURGICAL TECHNIQUE
In this chapter, the following procedures are discussed: salpingo-ovariolysis, fimbrioplasty, salpingostomy, tubotubal anastomosis to repair midtubal disease or to reverse a prior sterilization, tubocornual anastomosis to treat proximal tubal disease, and other procedures performed rarely in unusual circumstances. The techniques used for these procedures are essentially the same irrespective of the access route.
Whereas procedures for distal tubal disease are very amenable to laparoscopic access, anastomotic procedures are technically more difficult to accomplish by this route. Isthmicisthmic and isthmic-ampullary anastomosis (usually used for sterilization reversal) have been performed with varying degrees of accuracy via laparoscopic access, but accomplishing other types of anastomoses (especially tubocornual) through this access route is much more challenging.
With microsurgical procedures, our aim has always been to keep the techniques as simple as possible for the outcomes to be reproducible, not only by surgical virtuosi but also by all physicians who practice in this field. Our more recent technical modifications, including access through a minilaparotomy incision and the use of a protractor, were the result of the same thought process. Although we remain enthusiastic proponents of laparoscopic access, we do not let this enthusiasm blind us to the possibility that some procedures may still be performed better by modifications and improvements in traditional methods.
Salpingo-Ovariolysis
Pelvic and periadnexal adhesions usually are the sequel of PID. These adhesions may be broad or shallow; they are usually not too vascular and extend from one structure to another. In so doing, they tend to leave a space or potential space between the involved structures, an aspect that facilitates adhesiolysis (Fig. 21.14). Dense cohesive adhesions often result from prior surgery. In this case, adjacent structures are intimately conglutinated. The adherent surface is devoid of the superficial mesothelial layer of the peritoneum. In other words, the underlying stromal layers of the two structures coalesce. The lysis of such an adhesive process is technically difficult and is associated with a very high percentage of recurrence.
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