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Future pregnancy outcome in unexplained recurrent first trimester miscarriage

K Clifford1, R Rai, L Regan

  • 1Department of Obstetrics and Gynaecology, Imperial College School of Medicine at St. Mary's, London, UK.

Human Reproduction (Oxford, England)
|February 1, 1997
PubMed
Summary

Women with unexplained recurrent first trimester miscarriage have better pregnancy outcomes with supportive care. Age and number of previous miscarriages impact future miscarriage risk, but supportive care significantly improves success rates.

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Area of Science:

  • Reproductive Medicine
  • Obstetrics & Gynecology

Background:

  • Unexplained recurrent first trimester miscarriage affects numerous women.
  • Standard investigations like karyotyping and antiphospholipid antibody testing are often normal.
  • Limited evidence exists for non-pharmacological interventions.

Purpose of the Study:

  • To evaluate the pregnancy outcomes of women with unexplained recurrent first trimester miscarriage.
  • To assess the impact of supportive care versus no intervention.
  • To identify factors influencing future pregnancy success.

Main Methods:

  • Prospective study of 201 women with recurrent miscarriage.
  • Exclusion of known causes like chromosomal abnormalities and antiphospholipid syndrome.
  • Comparison of outcomes between women receiving early pregnancy supportive care and those not attending a dedicated clinic.

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Main Results:

  • Women aged 40 and above had a significantly higher miscarriage rate (52%) compared to younger women (25%).
  • Risk of miscarriage increased with the number of previous losses, reaching 53% after six or more losses.
  • Supportive care significantly reduced miscarriage rates (26% vs. 51%, P=0.002).

Conclusions:

  • Women with unexplained recurrent miscarriage can achieve excellent pregnancy outcomes with supportive care alone.
  • Pharmacological interventions are not necessary in many cases.
  • Dedicated miscarriage clinics offering supportive care improve pregnancy success rates.