Assisted reproductive technology in the United States and Canada: 1993 results generated from the American Society for Reproductive Medicine/Society for Assisted Reproductive Technology Registry.

OBJECTIVE

To summarize the procedures and outcomes of assisted reproductive technology (ART) initiated in the United States in 1993.

DESIGN

Data were collected on an annual summary form and submitted to the American Society for Reproductive Medicine/Society for Assisted Reproductive Technology Registry.

PARTICIPANTS

Two hundred sixty-seven programs submitted data on procedures performed in 1993. Data were collected in October 1994 so that outcome of all pregnancies established would be known.

MAIN OUTCOME MEASURES

The outcomes measured included clinical pregnancy, ectopic pregnancy, abortion, stillbirth, delivery, and congenital abnormality.

RESULTS

Programs reported initiations of 41,209 cycles of ART treatment, excluding frozen embryo and donor oocyte cycles. Of these, 33,543 cycles initiated were IVF (standard, with micromanipulation, and for host uterus transfer) with 18.3% deliveries per retrieval; 4,992 were cycles of GIFT with 28.1% deliveries per retrieval; 1,792 were cycles of ZIFT with 24.4% deliveries per retrieval; and 882 were combination cycles, combining IVF and one of the tubal transfer techniques, resulting in 27.8% deliveries per retrieval. In addition to these cycles initiated in 1993, 6,869 frozen ET procedures were reported, either as separate procedures or in combination with another ART procedure with 13.3% deliveries per procedure, and 2,766 donor oocyte cycles were initiated with an overall success of 30.2% deliveries per retrieval. As a result of all procedures, a total of 8,741 deliveries were reported.

CONCLUSIONS

In 1993, there were more programs offering more treatment cycles of ART. Overall average success rates (deliveries per procedures) exhibited only a small increase compared with previously reported summaries.