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Related Experiment Videos

Oral versus injectable ovulation induction agents for unexplained subfertility.

N Athaullah1, M Proctor, N P Johnson

  • 1University of Auckland, Dept of Obstetrics and Gynaecology, National Women's Hospital, Claude Rd, Epsom, Auckland, New Zealand.

The Cochrane Database of Systematic Reviews
|July 26, 2002
PubMed
Summary
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This review found insufficient evidence to determine if oral or injectable ovulation induction agents are better for unexplained subfertility. Larger trials are needed to assess benefits and harms of these fertility treatments.

Area of Science:

  • Reproductive Endocrinology
  • Infertility Treatment
  • Clinical Trials

Background:

  • Oral (anti-oestrogens) and injectable (gonadotrophins) agents are used to enhance egg production for unexplained subfertility.
  • The comparative efficacy and fertility outcomes of these agent types remain unclear.

Purpose of the Study:

  • To assess the efficacy of oral versus injectable ovulation induction agents in treating unexplained subfertility.

Main Methods:

  • A systematic review of randomized controlled trials was conducted using the Menstrual Disorders and Subfertility Group search strategy.
  • Five trials involving 231 couples with unexplained subfertility were included and assessed for quality.
  • Key outcomes included pregnancy, live birth, miscarriage, multiple birth, ovarian hyperstimulation syndrome, and cycle cancellation.

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Main Results:

  • Excluding trials with co-interventions, no significant differences in live birth or pregnancy rates were observed between oral and injectable agents.
  • When human chorionic gonadotrophin trigger injection was a co-intervention, live birth rates did not differ significantly, but oral agents showed reduced pregnancy rates.
  • No significant differences in miscarriage or multiple birth rates were found; data on ovarian hyperstimulation and cycle cancellation were limited.

Conclusions:

  • Current evidence is insufficient to establish superiority or inferiority of oral over injectable ovulation induction agents for unexplained subfertility.
  • Data on potential harms are limited, necessitating larger trials to provide comprehensive information on both benefits and risks.