Cardiovascular Diseases During Pregnancy.

Pregnancy-associated hemodynamic changes may cause severe complications in patients with cardiovascular diseases. It may also reveal previously undiagnosed conditions or worsen existing ones. To prevent maternal and fetal complications during pregnancy, a thorough evaluation of the pregnant woman's cardiac history, symptoms, functional capacity, and physical examination should be conducted, in line with current risk classification systems. In this case series, we present the course of pregnancy in four patients with severe cardiac pathology.