Chapter 12: High-Risk Perinatal Care: Gestational Conditions

A primary focus is placed on hypertensive disorders, including gestational hypertension, preeclampsia, eclampsia, and chronic hypertension. The text explains the pathophysiology of preeclampsia as a progressive, multi-systemic disorder rooted in placental ischemia and generalized endothelial cell dysfunction, which can lead to severe complications like HELLP syndrome—characterized by hemolysis, elevated liver enzymes, and low platelet counts. Clinical management for these patients emphasizes maternal safety and fetal stabilization, frequently utilizing magnesium sulfate for seizure prophylaxis and specific antihypertensive agents to manage severe blood pressure elevations. The chapter also addresses hyperemesis gravidarum, an extreme form of pregnancy-related nausea and vomiting that causes significant weight loss and electrolyte imbalances, necessitating intensive nutritional and fluid interventions. Hemorrhagic disorders are detailed according to their occurrence in early or late pregnancy; early complications include various types of spontaneous abortion, cervical insufficiency requiring surgical cerclage, ectopic pregnancies, and hydatidiform moles. Late-pregnancy bleeding risks are dominated by placenta previa and placental abruption, both of which are medical emergencies that jeopardize maternal and fetal oxygenation. The discussion extends to systemic clotting issues such as disseminated intravascular coagulation (DIC) and common infections like urinary tract infections, which can progress to life-threatening pyelonephritis. Finally, the chapter outlines the unique requirements for managing non-obstetric surgical needs, such as appendicitis, and the critical protocols for maternal trauma. In trauma and resuscitation scenarios, the text emphasizes that maternal stabilization is the first priority to ensure fetal survival, often requiring modifications like lateral uterine displacement during chest compressions or emergency resuscitative hysterotomy.