What is the leading cause of death in the first trimester?

The leading cause of death in the first trimester is ectopic pregnancy. This condition occurs when a fertilized egg implants outside the uterus, commonly in a fallopian tube. Ectopic pregnancy can lead to severe complications, including internal bleeding, if not diagnosed and treated promptly. These pregnancies are not viable and can pose significant risks to the mother's health, particularly due to the potential for rupture, which can result in life-threatening hemorrhage.

While miscarriage is a frequent occurrence in early pregnancy and might be more common than ectopic pregnancies, it is typically not a direct cause of maternal death. Hemorrhage is related to various complications, but in the context of first-trimester deaths, ectopic pregnancy represents a more significant risk. Hyperemesis gravidarum, although serious and can lead to complications, primarily involves severe nausea and vomiting rather than being a leading cause of death. Understanding these distinctions is crucial for recognizing the most critical risks in early pregnancy.