Objective: To determine if a fixed-dose stimulation protocol with monitoring limited to a single ultrasound can provide acceptable outcomes in assisted reproduction technologies (ART) procedures in appropriately selected patients.
Design: Prospective study of all minimally monitored ART cycles from 1996 through 1998.
Setting: University ART program.
Patients: Eligibility included Institutional Review Board consent, age 18-37, basal FSH < or = 10, normal semen parameters, and regular menses. IVF (n = 81) and GIFT (n = 14).
Interventions: A single ultrasound was performed after 8 or 9 days of stimulation in a fixed-schedule long luteal phase leuprolide protocol. No hormone levels were obtained. Human chorionic gonadotropin was administered when at least 2 follicles were projected to reach 18 mm.
Main Outcome Measures: Pregnancy, delivery, and implantation rates.
Results: The clinical pregnancy rates were 51% for IVF and 36% for GIFT. Delivery rates were 42% for IVF and 29% for GIFT. The implantation rates for IVF were 23% and 17% for GIFT. No patient was admitted for ovarian hyperstimulation.
Conclusions: We were able to achieve satisfactory pregnancy and delivery rates in properly selected patients with a minimal monitoring protocol, limited to a single ultrasound near the end of a fixed-stimulation regimen. The reduced time commitment and cost led to a very high patient acceptance of this approach.
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