Controlled ovarian hyperstimulation is a technique used in assisted reproduction involving the use of fertility medications to induce ovulation by multiple ovarian follicles.[1] These multiple follicles can be taken out by oocyte retrieval (egg collection) for use in in vitro fertilisation (IVF), or be given time to ovulate, resulting in superovulation which is the ovulation of a larger-than-normal number of eggs,[2] generally in the sense of at least two. When ovulated follicles are fertilised in vivo, whether by natural or artificial insemination, there is a very high risk of a multiple pregnancy.
In this article, unless otherwise specified, hyperstimulation will refer to hyperstimulation as part of IVF. In contrast, ovulation induction is ovarian stimulation without subsequent IVF, with the aim of developing one or two ovulatory follicles.[3]
^TheFreeDictionary controlled ovarian hyperstimulation Retrieved on October 3, 2009
^Webster's New World College Dictionary » superovulation Retrieved on October 3, 2009
^"Ovulation Induction". Manchester University. Retrieved 2019-04-04.
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College of Human Sciences, Lubbock, Texas, United States Controlledovarianhyperstimulation, a technique in assisted reproduction This disambiguation...
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