Experience with progesterone gel for luteal support in a highly successful IVF programme.

Efficacy of luteal support from single daily administration of Crinone((R)) 8% (progesterone gel) was tested in 43 women in an IVF programme with historical pregnancy rates >50%. Results were compared with those achieved in 46 women concurrently undergoing IVF and receiving 50 mg i.m. progesterone, and with historical data. Pregnancy rates (PR) were evaluated approximately 2 weeks after undergoing IVF by human chorionic gonadotrophin (HCG) measurement (total PR), by ultrasound 2-4 weeks later (clinical PR), and by counting births. Prior experience with other progesterone formulations was compared with that of Crinone 8%. Demographic and IVF characteristics were comparable for both concurrently treated groups. Total PR, clinical PR and live birth rates were similar for the Crinone and the concurrent i.m. progesterone groups: 31 (72.1%) versus 34 (73.9%); 26 (60.5%) versus 28 (60.9%), and 23 (53.5%) versus 23 (50%) respectively. Clinical PR and live birth rates were also similar to the last data reported to the Society for Assisted Reproduction Therapy. Overall acceptability of Crinone 8% was excellent. Among subjects with prior i.m. injection experience, most patients (69.2%) agreed that the gel was easier to use, less painful (76.9%) and less time-consuming (61.5%) than i.m. injections. In conclusion, Crinone 8% offers an appreciable improvement, as it provides an effective luteal support option that avoids painful i.m. injections.