Which complication is particularly high in ectopic pregnancies?

In ectopic pregnancies, the most significant complication is indeed the rupture of the pregnancy site. An ectopic pregnancy occurs when the fertilized egg implants outside of the uterus, commonly in a fallopian tube. As the embryo grows, it can lead to increased pressure and eventually rupture of the tissue where it is implanted, which can cause internal bleeding. This condition poses a serious risk to the individual's health and can lead to life-threatening scenarios.

While amenorrhea can be associated with ectopic pregnancies due to hormonal changes, it is not a complication; rather, it is a common sign of pregnancy. Preeclampsia and gestational diabetes are conditions primarily associated with intrauterine pregnancies and do not occur as complications of ectopic pregnancies. Thus, the rupture of the pregnancy site stands out as a critical and dangerous complication requiring immediate medical attention.