Ectopic pregnancy in frozen-thawed embryo transfer: A retrospective analysis of 4,034 cycles and related factors

We analyzed the incidence of ectopic pregnancy in frozen-thawed embryo transfer (FET) as a function of natural and hormone replacement cycles and ectopic pregnancy-related factors. In this study, there were 4,034 FET cycles performed in our center between January 2005 and December 2010, and the rate...

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Bibliographic Details
Published in:Systems biology in reproductive medicine 2013-02, Vol.59 (1), p.34-37
Main Authors: Zhang, Yi-le, Sun, Jing, Su, Ying-chun, Guo, Yi-hong, Sun, Ying-pu
Format: Article
Language:English
Subjects:
Adult
China - epidemiology
ectopic pregnancy
ectopic pregnancy-related factors
Embryo Transfer - adverse effects
Embryo Transfer - methods
Female
Freezing
frozen-thawed embryo transfer
hormone replacement cycles
Hormone Replacement Therapy - adverse effects
Humans
natural cycles
Ovulation Induction - adverse effects
Pregnancy
Pregnancy, Ectopic - epidemiology
Pregnancy, Ectopic - etiology
Retrospective Studies
Salpingitis - complications
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Summary:We analyzed the incidence of ectopic pregnancy in frozen-thawed embryo transfer (FET) as a function of natural and hormone replacement cycles and ectopic pregnancy-related factors. In this study, there were 4,034 FET cycles performed in our center between January 2005 and December 2010, and the rates of ectopic pregnancy were compared between natural and hormone replacement cycles. The analysis of ectopic pregnancy-related factors in FET was performed with 1:4 age-matched chi-square tests. The rate of ectopic pregnancy was lower in natural FET cycles (1.46%) than in hormone replacement FET cycles (3.31%) with a statistical significance (P 
ISSN:1939-6368
1939-6376
DOI:10.3109/19396368.2012.731470