Obgyn Key

First Trimester Pregnancy Complication 5.1 Early Pregnancy Failure Description and Clinical Features The rate of pregnancy loss is highest in the first trimester, especially before 8 weeks gestation. A number…

Fetal Anomalies at 11–14 Weeks 4.1 Thickened Nuchal Translucency Description and Clinical Features The thickness of the tissue posterior to the cervical spine at 10–14 weeks, called the nuchal translucency,…

Second and Third Trimester Fetal Anatomy 2.1 Head Description and Clinical Features By the beginning of the second trimester, the fetal cranium and brain are well formed, although the skull…

First Trimester 1.1 Normal Pregnancy Prior to 6 Weeks of Gestation Description and Clinical Features Fertilization occurs at approximately 14 days after the beginning of the last menstrual period (LMP)….

Second and Third Trimester Nonfetal Components 3.1 Umbilical Cord Description and Clinical Features The umbilical cord contains the blood vessels that carry blood between the fetus and the placenta. It…