Use of Low Dose of HCG During Ovulation Induction With CC in Women With CC Resistant PCOS

Women will be randomly divided into two groups; CC-HCG group and CC group. Women in the CC-HCG group will receive CC (150 mg/day for 5 consecutive days from day 2 of cycle) and HCG (200 IU/day SC from day 7 of cycle). Women in the CC group will receive CC alone (150 mg/day for 5 consecutive days from day 2 of cycle). Transvaginal sonography (TVS) scan will be performed regularly for monitoring of follicular growth (folliculometry); starting from day 10 of the stimulation cycle and repeated every 2-3 days. When there will be at least one follicle ≥ 18 mm in diameter, final oocyte maturation will be induced by intramuscular administration of 10000 IU of HCG and timed intercourse will be advised. If there will be no follicle ≥ 12 mm by day 16 of the cycle, monitoring of follicular growth will be discontinued and the cycle will be presumed to be anovulatory. Ovulation will be documented by TVS scan one week after triggering of oocyte maturation and will be confirmed by assessing the midluteal serum progesterone level. Each woman will be subjected to ovarian stimulation for a maximum of 3 consecutive cycles except if she gets pregnant in the first or second cycle

Inclusion criteria

• Infertile lean women with PCOS as defined by the Rotterdam criteria.
• CC resistance (defined as failure of ovulation after receiving 150 mg/day of CC for 5 consecutive days per cycle, for at least 3 consecutive cycles).

Exclusion criteria

• Age < 20 or > 35 years.
• Presence of any infertility factor other than anovulatory PCOS.
• Previous history of ovarian surgery or surgical removal of one ovary.
• Previous exposure to cytotoxic drugs or pelvic irradiation.
• Oral hypoglycemic or hormonal therapy either currently or in the preceding 3 months.
• Metabolic or hormonal abnormalities.