Previous pregnancy loss: Risks related to severity of preterm delivery

Previous pregnancy loss: Risks related to severity of preterm delivery

The purpose of this study was to examine the association between previous pregnancy losses and subsequent risk of preterm delivery. A population-based Swedish study including information on all births and womens' hospital admissions for pregnancy loss (n=601,883) in Sweden between 1987 and 2000...

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Bibliographic Details
Published in:American journal of obstetrics and gynecology Vol. 191; no. 4; pp. 1225 - 1231
Main Authors: Buchmayer, Susanne M., Sparén, Pär, Cnattingius, Sven
Format: Journal Article
Language:English
Published: Philadelphia, PA Mosby, Inc 01-10-2004
Elsevier
Subjects:
Abortion, Spontaneous - epidemiology
Adolescent
Adult
Biological and medical sciences
Confidence Intervals
Diseases of mother, fetus and pregnancy
Ectopic pregnancy
Female
Fetal Membranes, Premature Rupture - epidemiology
Gynecology. Andrology. Obstetrics
Humans
Logistic Models
Medical sciences
Medicin och hälsovetenskap
Missed abortion
Multivariate Analysis
Odds Ratio
Pregnancy
Pregnancy, Ectopic - epidemiology
Pregnancy. Fetus. Placenta
Premature Birth - epidemiology
Premature Birth - etiology
Preterm delivery
Risk Factors
Spontaneous abortion
Spontaneous abortion
Ectopic pregnancy
Preterm delivery
Missed abortion
Spontaneous abortion Missed abortion Ectopic pregnancy Preterm delivery
Pregnancy disorders
Gynecology
Risk factor
Premature delivery
Abortion
Obstetrics
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Summary:The purpose of this study was to examine the association between previous pregnancy losses and subsequent risk of preterm delivery. A population-based Swedish study including information on all births and womens' hospital admissions for pregnancy loss (n=601,883) in Sweden between 1987 and 2000 was performed. The risk of preterm delivery after a previous pregnancy loss was estimated using logistic regression models. The risk of preterm premature ruptures of the membranes (PROM), preterm labor, and other reasons for preterm delivery was also assessed. Previous spontaneous abortions and missed abortions were associated with increased risks of preterm delivery, and the risks increased with severity of preterm delivery. Previous pregnancy loss increased the risk of preterm PROM and preterm labor foremost in deliveries before 32 weeks, but was not associated with other reasons of very preterm delivery. Our results support the hypothesis that pregnancy loss and early preterm delivery may share etiologic causes.
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ISSN:0002-9378
1097-6868
DOI:10.1016/j.ajog.2004.02.066