Why the study?
Does first trimester threatened abortion with visible fetal heart beat increase the risk of subsequent spontaneous abortion compared to normal pregnancies?
Does first trimester threatened abortion with visible fetal heart beat increase the risk of subsequent spontaneous abortion compared to normal pregnancies?
First trimester bleeding with a visible fetal heart beat is associated with a significantly higher risk of subsequent spontaneous abortion compared to normal pregnancies.
Answers are grounded in this paper and cite their sources.
May warrant closer surveillance in first-trimester threatened abortion; leaves open whether interventions reduce risk.
UNLABELLED: Pregnancy with visible fetal heart beat complicated by first trimester threatened abortion had significant increased risk of subsequent spontaneous abortion compared with normal pregnancy. OBJECTIVE: To compare pregnancy outcomes in cases complicated by first trimester threatened abortion with those that were not. METHODS: Prospective cohort study of 255 cases of first trimester threatened abortions but with visible heart beat and 265 other normal pregnancies. RESULTS: Spontaneous abortion rates of 5.5% (with relative abortal risk of 2.91) was found for study group, compared to 1.88% for controls (p < 0.05). Preterm delivery was also higher, but was not statistically significant. CONCLUSIONS: First trimester bleeding with visible fetal heart beat appears to associate significantly with higher subsequent spontaneous abortion rate than those without.
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Tongsong et al. (1995) studied this question.
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