ASSISTED REPRODUCTIVE TECHNOLOGY IN THE UNITED-STATES AND CANADA - 1991 RESULTS FROM THE SOCIETY-FOR-ASSISTED-REPRODUCTIVE-TECHNOLOGY GENERATED FROM THE AMERICAN-FERTILITY-SOCIETY REGISTRY

Objective: To summarize the procedures and outcomes of assisted reprod uctive technology (ART) initiated in the United States in 1991. Design : Data were collected on an annual summary form and submitted to the S ociety for Assisted Reproductive Technology generated from The America n Fertility Society central registry. Participants: Two hundred fiftee n programs submitted data on procedures performed in 1991. Data were c ollected in October of 1992 so that outcome of all pregnancies establi shed would be known. Main Outcome Measures: The outcomes measured incl uded clinical pregnancy, ectopic pregnancy, abortion, stillbirth, deli very, and congenital abnormality. Results: In 1991, programs reported initiation of 33,001 cycles of ART treatment, excluding frozen embryo and donor oocyte cycles. Of these, 24,671 cycles initiated were IVF wi th 15.2% deliveries per retrieval, 5,452 were cycles of GIFT with 26.6 % deliveries per retrieval, and 2,104 were cycles of zygote intrafallo pian transfer with 19.7% deliveries per retrieval, and 714 were combin ation cycles, combining IVF and one of the tubal transfer techniques, resulting in 19.3% deliveries per retrieval. In addition to these cycl es initiated in 1991, 4,838 frozen embryo procedures were reported, ei ther as separate procedures or in combination with another ART procedu re with 11.1% deliveries per procedure, and 1,107 donor oocyte or surr ogacy cycles were initiated with an overall success of 25.6% deliverie s per retrieval. From all of these procedures, a total of 5,699 delive ries were reported. Conclusions: In 1991, there were more programs off ering more treatment cycles of ART. Average success rates for most ART procedures exhibited a small increase compared with previously report ed summaries.