Effect of Obesity on Clinical Parameters and Pregnancy Rates in Women with Polycystic Ovary Syndrome Undergoing Ovulation Induction Cycles.

OBJECTIVE: To evaluate the effect of obesity on clinical parameters and pregnancy rates in infertile women with polycystic ovary syndrome (PCOS), who have undergone ovulation induction. STUDY DESIGN: This retrospective study included 177 women with PCOS who presented to our gynecological endocrinology outpatient clinic for diagnosed infertility. All of the patients initially received clomiphene citrate (CC), and if CC resistance was noted, gonadotropins were used. The patients were classified into 2 groups according to BMI (<30 kg/m2=control group and ≥30 kg/m2=study group). Pregnancy was assessed by β-hCG levels and a visible gestational sac in the endometrium. RESULTS: The demographic and hormonal parameters were similar between the groups. The mean duration of infertility was longer in the study group (p<0.05). In the study group, cycle cancellation due to CC resistance (p=0.039) and mean baseline LH levels (p=0.026) was statistically more likely than in the control group. On follow-up, 4 (9.3%) patients in the study group had conceived and 26 (19.4%) patients in the control group had conceived (p=0.041). CONCLUSION: Obesity adversely affects pregnancy rates in women with PCOS who undergo ovulation induction cycles. Clinicians should recommend weight loss in these patients before ovulation induction.