At a Glance HELLP syndrome is characterized by hemolysis (H), elevated liver enzymes (EL), and low platelets (LP). The incidence of HELLP syndrome among pregnant patients ranges from 0.1 to 0.2%. It develops in approximately 10-20% of patients with severe preeclampsia/eclampsia. Symptoms typically develop in the third trimester, but second trimester or postpartum disease is…
At a Glance Premature delivery is defined as delivery before the completion of 37 weeks of gestation. The causes of preterm delivery are not completely understood but may include preterm labor, preterm spontaneous rupture of membranes, cervical incompetence, or other medical problems. Since clinical and laboratory evidence suggest multi-factorial causes of preterm delivery, diagnostic, preventive,…
At a Glance Respiratory distress syndrome (RDS), also known as hyaline membrane disease (HMD), is most frequently caused by insufficient surfactant production, resulting in structural lung immaturity in newborns. The risk of RDS is highest in premature births (>60% at 29 weeks of gestation, 20% at 34 weeks of gestation, and <5% at 37 weeks…
At a Glance The definition of infertility is the inability to conceive after 1 year of unprotected intercourse. Infertility can be classified as primary, when no previous successful pregnancies have occurred, or secondary, when there have been previous conceptions. The most common causes for infertility are hormonal abnormalities of the hypothalamic-pituitary-gonadal axis. In addition, anatomic…
At a Glance Gestational thyrotoxicosis is a rare occurrence during pregnancy and is usually due to Grave’s disease (see chapter on Grave’s disease). Presentation is usually in the mid- to late-first trimester. In addition to hypermesis gravidarum, other symptoms are those exhibited in hyperthyroidism: heat intolerance, sweating, angina, tachycardia, nervousness, and moist, warm skin. There…
At a Glance The term porphyria refers to a group of disorders in which porphyrins (or their precursors) accumulate in body fluids and tissues. All but one of the porphyrias is hereditary. Each disease is caused by a partial deficiency in one of the enzymes of heme synthesis. With the exception of two very rare…
