Ovarian Hyperstimulation Syndrome

Ovarian hyperstimulation syndrome (OHSS) is a serious and potentially life-threatening complication of ovarian stimulation in women undergoing in vitro fertilization (IVF). It is triggered solely by human chorionic gonadotrophin (hCG), used for final oocyte maturation (early OHSS), or by endogenous hCG produced by the implanted blastocyst (late OHSS). Although its incidence may have decreased due ...