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对我中心 1 996～ 1 997年间施行的 2 55个体外受精 -胚胎移植 (IVF-ET)促超排卵周期 ,阴道超声监测卵泡发育的情况进行回顾性分析。发现优势卵泡在排卵前的数天以 1 .3 mm/天的速率呈直线生长 ,3个最大卵泡的平均生长速率差异有显著意义 (P<0 .0 5) ,而妊娠组和非妊娠组间卵泡的平均生长速率差异无显著性意义 (P>0 .0 5)。认为促超排卵药物虽然可以促使多个卵泡发育 ,但不能完全克服这些发育卵泡之间的生长差异。
A retrospective analysis was performed on the progress of superviolar ovulation cycle by 2 55 in vitro fertilization-embryo transfer (IVF-ET) performed in our center from 1996 to 1997 and the monitoring of follicular development by vaginal ultrasound. The dominant follicles were found to grow linearly at a rate of 1.3 mm / day for several days before ovulation, and the average growth rate of the three largest follicles was significantly different (P <0.05), while that of the pregnant and non-pregnant groups The average growth rate of follicles was not significantly different (P> 0.05). Although promoting ovarian hyperstimulation drugs can promote the development of multiple follicles, but can not completely overcome the growth differences between these developmental follicles.