Ectopic pregnancy rate increases with the number of retrieved oocytes in autologous IVF but not in donor/recipient cycles: an analysis of 109,140 clinical pregnancies from the SART registry

Abstract

The impact of supraphysiologic hormone levels resulting from controlled ovarian stimulation on ectopic pregnancy (EP) risk is unclear. In an attempt to isolate ovarian stimulation as a potential modifier of EP risk, we used a large and recent national registry to compare EP rates between fresh autologous and donor oocyte IVF cycles.