Analysis of Correlative Factors in Predicting Ovulation

Objective To search convenient and practicable indexes in predicting ovulation by analyzing the relationship between ovulation and its correlative factors.Method Follicular diameters and endometrial thickness had been monitored continuously for 235 cycles by B ultrasonic.LH peaks were determined by ELISA once the follicular diameters were not less than 16 mm and at the same time CS and MI were assayed.Blood Estradiol and Progesterone were determined by RIA.Results Before ovulation, follicular diameters of induced ovulation group were significantly bigger than those of natural ovulation group (P0.05),while there were no significant difference between endometrial thickness of the two groups.Ovulations occured in 227 cases(96.40%) within 72 hours after appearance of LH peaks.CS of 91 cases were over 8 before ovulation in natural ovulation group(91.92%).MI were 0/9/91 on average one day before ovulations.Conclusion B ultrasonic surveillance on follicular development and LH peak were convenient and practicable indexes in predicting ovulation.