Pathology - Pre eclampsia

Pathology - Pre eclampsia
Definition: Proteinuria and hypertension brought on by pregnancy. The study of epidemiology • About 5% of pregnancies are complicated. • More common in mothers who are expecting their first child. The cause • The main underlying issue is abnormal placentation

The pathogenesis Intradecidual spiral arteries and basal arteries fail to physiologically convert into big, low resistance vessels due to abnormally shallow trophoblast invasion; maternal blood pressure increases in an effort to make up for this, but the overall effect is placental ischaemia.

• The ischemic placenta releases toxins that harm endothelium when they reach the mother's circulation. • Widespread fibrin thrombi formation in the microcirculation and the danger of cerebral hemorrhage, heart failure, liver failure, and renal failure are indicators of the progression to eclampsia.

Presentation: The majority of women receive a diagnosis when regular prenatal monitoring detects proteinuria and hypertension after 20 weeks of pregnancy.

Macroscopy: Generally speaking, placentas are smaller than those from typical pregnancies. • Placental infarcts occur considerably more frequently. The study of histopathology • Villous cytotrophoblasts are more numerous and prominent in placental villi, and the basement membrane thickens unevenly. Villous blood arteries are frequently tiny and undetectable. Failure of trophoblast physiological conversion is seen in maternal decidual arteries. Atherosis, or intramural buildup of lipid-laden macrophages, and fibrinoid necrosis of the artery wall are also seen in a small percentage of cases. • Enlarged "bloodless" glomeruli with inflated endothelial cells are visible in the kidneys. In more severe situations, fibrin microthrombi may be observed inside glomerular capillary loops. • In severe cases, the liver may exhibit hepatic necrosis, hemorrhage, and fibrin thrombi in the hepatic sinusoids.

Prognosis The sole treatment for pre-eclampsia is delivery. It is necessary to balance the dangers to the mother and the fetus from an early delivery. Because of the disease's unpredictable behavior and quick progression, patients need to be regularly watched for indications of decline.