Physiologic Jaundice
Physiologic Jaundice Because at some point during the first week of life almost every newborn has a total serum bilirubin (TSB) level that exceeds 1 mg/dL (17 μmol/L, the upper…
Physiologic Mechanisms of Neonatal Jaundice
Physiologic Mechanisms of Neonatal Jaundice At any time in the infant’s first few days after birth, the serum bilirubin level reflects a combination of the effects of bilirubin production, conjugation,…
Fetal Bilirubin Metabolism
Fetal Bilirubin Metabolism Bilirubin can be detected in normal amniotic fluid after about 12 weeks of gestation, but it disappears by 36 to 37 weeks’ gestation. The ability of human…
Neonatal Bilirubin Metabolism
Neonatal Bilirubin Metabolism Bilirubin Production The normal destruction of circulating erythrocytes accounts for about 75% of the daily bilirubin production in the newborn. Senescent erythrocytes are removed and destroyed in…
Preoperative and Postoperative Care of the Infant with Critical Congenital Heart Disease
Preoperative and Postoperative Care of the Infant with Critical Congenital Heart Disease John M. Costello Wayne H. Franklin INTRODUCTION The contemporary strategy of early, complete repair for congenital heart defects…
Formation, Structure, and Properties of Bilirubin
Formation, Structure, and Properties of Bilirubin Detailed reviews of the chemistry and metabolism of bilirubin are found elsewhere (3,4,5,6,7). Bilirubin is the end product of the catabolism of iron protoporphyrin…
Introduction
Introduction Jaundice is the most common and one of the most vexing problems that can occur in the newborn. As Hansen points out in an elegant historical review (1), “neonatal…
Second-Degree Atrioventricular Block
Second-Degree Atrioventricular Block Second-degree AV block is defined as intermittent failure of conduction of some atrial depolarizations to the ventricles. Second-degree AV block is subdivided into Mobitz type I (Wenckebach)…
Atrioventricular Block
Atrioventricular Block First Degree Atrioventricular Block First degree A-V block is characterized by an abnormally prolonged P-R interval for age and heart rate. Most commonly, this is as a result…
Junctional Ectopic Tachycardia
Junctional Ectopic Tachycardia Junctional ectopic tachycardia is a rare, often incessant, tachyarrhythmia due do to enhanced automaticity in the A-V node or bundle of His. There is generally a normal…
