The effect of duration of coasting and estradiol drop on the outcome of assisted reproduction: 13 years of experience in 1,068 coasted cycles to prevent ovarian hyperstimulation.
Fertil Steril
; 94(5): 1757-63, 2010 Oct.
Article
em En
| MEDLINE
| ID: mdl-19939366
ABSTRACT
OBJECTIVE:
To determine the effect of duration of coasting (Cd), estradiol levels at trigger (E(2)), and level of estradiol drop (E(2)d) on live birth rate (LBR) in cycle outcome.DESIGN:
Retrospective analysis.SETTING:
Hospital-based fertility clinic. PATIENT(S) A total of 1,068 coasted cycles (5.7% of total) of IVF/ICSI from 1996 to 2008. INTERVENTION(S) Coasting in IVF/ICSI cycles. MAIN OUTCOME MEASURE(S) Live birth rate and secondary cycle outcomes. RESULT(S) Mean Cd, E(2), and E(2)d were 4.7 days, 11,567 pmol/L, and 9,760 pmol/L, respectively. Maternal age, duration of subfertility, and serum FSH were significantly lower, and AMH (39.7 vs. 15.1 pmol/L) and prevalence of polycystic ovary syndrome (31.8% vs. 17.8%) significantly higher, in coasted cycles. Fertilization rate, clinical pregnancy rate, and LBR per cycle and implantation rate of 64.4%, 40.7%, 35.7%, and 24.7%, respectively, were demonstrated, with no significant difference in LBR in cycles coasted for up to 8 days or when divided according to E(2) or E(2)d. Lack of predictive capability on LBR was confirmed by receiver operator curve analysis which demonstrated areas under the curve of 0.51, 0.53, and 0.54 for E(2), Cd, and E(2)d, respectively. CONCLUSION(S) Although cycle numbers beyond 6 days are limited, coasting for up to 8 days does not affect LBR, and E(2) and E(2)d levels do not significantly affect cycle outcome.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Síndrome de Hiperestimulação Ovariana
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Taxa de Gravidez
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Técnicas de Reprodução Assistida
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Estradiol
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Gonadotropina Coriônica
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Folículo Ovariano
Tipo de estudo:
Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Female
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Humans
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Pregnancy
Idioma:
En
Revista:
Fertil Steril
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Reino Unido