Endometriosis and spontaneous abortion rate: a cohort study in infertile women

Roberto Matorras, Matorras R, R Matorras, Rodríguez F, F Rodríguez, Fernando Rodrı́guez, Gutierrez de Terán G, G Gutierrez de Terán, Gloria Gutiérrez de Terán, Pijoan JI, José Ignacio Pijoán, J I Pijoan, Ramón O, Olga Ramón, O Ramón, F J Rodríguez-Escudero, Francisco J Rodrı́guez-Escudero, Rodríguez-Escudero FJ
European journal of obstetrics, gynecology, and reproductive biology · 1998 · vol. 77(1) , pp. 101–105 · doi:10.1016/s0301-2115(97)00181-4 · PMID:9550209 · W2105006381
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This cohort study investigated the association between endometriosis and the spontaneous abortion rate in a population of infertile women.

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Abstract

ObjectiveTo ascertain if there is an association between endometriosis and spontaneous abortion.DesignProspective cohort study.SettingMedical School Hospital.Population174 infertile women laparoscopically diagnosed with endometriosis and 174 infertile women in which endometriosis was ruled out by laparoscopy, in the same period of time.Main outcome measureSpontaneous abortion. Non-progressive gestational sac and/or histological study.ResultsPer woman abortion rate was 7.47% (13/174) in the endometriosis group, similar to 5.74% (10/174) in the infertile women without endometriosis (RR=1.32: CI=0.53-3.36). Nor were there any differences in the per pregnancy abortion rate: 20.96% (13/62) in endometriosis vs. 16.94% (10/59) in non-endometriosis (RR=1.3; CI=0.47-3.57). The abortion rate was similar in the different AFS stages: 22.86% (8/35) in stage I, 16.67% (3/18) in II, 25% (1/4) in III and 20% (1/5) in IV. In stage I no differences were observed in patients who were managed expectantly or with medical treatment.ConclusionEndometriosis is not associated with an increased abortion rate. The severity of disease expressed by AFS staging is not associated with an increase in the abortion rate. In stage I the treatment of endometriosis did not decrease abortion rates.

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Condition tags

endometriosis

MeSH descriptors

Abortion, Spontaneous Endometriosis Infertility, Female Abortion, Spontaneous Abortion, Spontaneous Adult Cohort Studies Endometriosis Female Humans Incidence Infertility, Female Pregnancy Prospective Studies Risk Factors

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