Human Reproduction, Vol. 8, No. 8, pp. 1284-1287, 1993
© 1993 European Society of Human Reproduction and Embryology
research-article |
Pregnancy: Analysis of the risk factors with regard to the occurrence of ectopic pregnancy after medically assisted procreation
Centre for Reproductive Medicine, University Hospital, Dutch-speaking Brussels Free University (Vrije Universiteit Brussel) Laarbeeklaan 101, B-1090 Brussels, Belgium
Correspondence: 1To whom correspondence should be addressed
In a retrospective study (19851989) based on data from the Centre for Reproductive Medicine in Brussels, a total of 23 ectopic pregnancies (2.24%) occurred after 3800 embryo, zygote or gamete transfers. This number was low compared with the data published elsewhere. Tubal damage was a major risk factor towards developing an ectopic pregnancy after in-vitro fertilization and embryo transfer. The number of ectopic pregnancies after the association of clomiphene citrate and human menopausal gonadotrophin (HMG) was significantly higher in patients with tubal (7.8%) and non-tubal indications (2.1%) compared with those stimulated with gonadotrophin-releasing hormone (GnRH) and HMG (2.18% and 0.84%, respectively). The number of replaced embryos was not associated with the rate of ectopic pregnancy and neither did transfer technique (intra-uterine or intra-Fallopian transfer) influence the ectopic pregnancy rate.
Key words: ectopic pregnancy/embryo transfer/Fallopian tube/risk factor
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