Preeclampsia

Preeclampsia is a complication of pregnancy that causes a narrowing of blood vessels which supply blood to organs. This can result in life-threatening complications to both mother and fetus, as the uterus and placenta are among the organs whose blood supply can be impaired.

Preeclampsia affects about 5% of pregnancies, and may be more likely in pregnancies resulting from in vitro fertilization.

The first sign of preeclampsia is usually a rise in blood pressure, which may go undiagnosed. Most preeclampsia occurs late in pregnancy and does not interfere with a healthy delivery, but early-onset preeclampsia can cause serious pregnancy complications.