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Fertil Steril. 1997 Apr;67(4):717-23.
Pregnancy and birth rates after oocyte donation.
Remoh?J, Gartner B, Gallardo E, Yalil S, Sim? C, Pellicer
A.
Instituto Valenciano de Infertilidad, Valencia, Spain.
Objectives:
To determine accumulated conception and live
birth rates in ovum donation.
Design:
Retrospective study
from a computer database. Pregnancies with one gestational
sac observed by ultrasound have been included as
conceptional cycles and pregnancies that resulted in one
live child were recorded for the analysis of the live birth
rates. Life table analysis was applied.
Setting:
Oocyte
donation program at the Instituto Valenciano de Infertilidad.
Patients:
Three hundred ninety-seven recipients undergoing
a total of 627 ETs were analyzed.
Interventions:
Ovarian
stimulation and ovum pick-up in donors. Uterine ET in
recipients after appropriate exogenous steroid replacement.
MAIN OUTCOME MEASUREMENT(S): Accumulated and estimated (95%
confidence intervals [CI]) conception and live birth rates
in the oocyte donation program as well as considering age
and cause of infertility of the recipients.
Results:
Pregnancy rate after one cycle was 53.4% (CI 50.9% to
55.9%), with a delivery rate of 42.6% (CI 40.1% to 45.1%).
Accumulated pregnancy rate increased up to 94.8% (CI 90.6%
to 99.0%) after four transfers. Similarly, live birth rates
reached 88.7% (CI 88.1% to 89.3%) after four attempts of ET
by ovum donation. Cycle fecundity rates were maintained at
approximately 50% after each attempt. Implantation rate was
18.3% (430/2,340 replaced embryos). Age and cause of
entering the program did not influence the overall results
of ovum donation.
Conclusions:
Oocyte donation is a
successful treatment modality for infertile couples that
offers even higher success rates than natural conception. No
difference in cumulative pregnancy rate was observed
regardless of recipient age, indication for oocyte donation,
or number of cycles attempted.

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