科研之友
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摘要
The role of exogenous LH in ovarian stimulation is controversial.The following LH ceiling theory was postulated:that above a certain level,LH is detrimental to follicular maturation and growth in the late follicular phase.It was reported that rLH administered in the late follicular phase may promote maturation and ovulation of a single or limited number follicles while inducing atresia in secondary follicles,and also that adding low-dose hCG may shorten the interval of stimulation,reduce the dose of exogenous FSH administration,increase atresia of small antral follicles,and conceivably reduce the chance of ovarian hyperstimulation syndrome(OHSS) and multiple pregnancy.
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