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Erschienen in:
01.05.2014 | Assisted Reproduction Technologies
Serum progesterone concentration on day of embryo transfer in donor oocyte cycles
Erschienen in: Journal of Assisted Reproduction and Genetics | Ausgabe 5/2014
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Purpose
To evaluate the association between serum progesterone (P) levels on the day of embryo transfer (ET) and pregnancy rates in fresh donor IVF/ICSI cycles.
Methods
Fresh donor cycles with day 3 ET from 10/2007 to 8/2012 were included (n = 229). Most cycles (93 %) were programmed with a gonadotropin releasing hormone (GnRH) agonist; oral, vaginal or transdermal estradiol was used for endometrial priming, and intramuscular P was used for luteal support (50–100 mg/day). Recipient P levels were measured at ET, and P dose was increased by 50–100 % if <20 ng/mL per clinic practice. The main outcome measure was rate of live birth (> = 24 weeks gestational age). Generalized estimating equations were used to account for multiple cycles from the same recipient, adjusted a priori for recipient and donor age.
Results
Mean recipient serum P at ET was 25.5 ± 10.1 ng/mL. Recipients with P < 20 ng/mL at ET, despite P dose increases after ET, were less likely to achieve clinical pregnancy (RR = 0.75, 95 % CI = 0.60–0.94, p = 0.01) and live birth (RR = 0.77, 95 % CI = 0.60–0.98, p = 0.04), as compared to those with P ≥ 20 ng/mL. P dose increases were more often required in overweight and obese recipients.
Conclusions
Serum P levels on the day of ET in fresh donor IVF/ICSI cycles were positively correlated with clinical pregnancy and live birth rates. An increase in P dose after ET was insufficient to rescue pregnancy rates. Overweight and obese recipients may require higher initial doses of P supplementation. Future research is needed to define optimal serum P at ET and the interventions to achieve this target.