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Related Experiment Videos

Tocolysis and preterm labour.

James Forrester King1

  • 1Department of Perinatal Medicine, Royal Women's Hospital, Melbourne, Australia. james.king@rwh.org.au

Current Opinion in Obstetrics & Gynecology
|November 10, 2004
PubMed
Summary

Tocolytic treatment for preterm labor remains controversial. Nifedipine is effective, while betamimetics and magnesium sulfate should be abandoned, and further research is needed for optimal fetal outcomes.

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Area of Science:

  • Obstetrics and Gynecology
  • Perinatology
  • Pharmacology

Background:

  • Tocolytic therapy is frequently used for preterm labor, despite ongoing debate regarding its efficacy.
  • Recent clinical literature has been appraised to address controversies surrounding tocolytic treatments.

Purpose of the Study:

  • To review and appraise recent clinical literature on tocolytic treatments for preterm labor.
  • To clarify the controversies surrounding the use and effectiveness of various tocolytic agents.

Main Methods:

  • Systematic review and appraisal of recent clinical literature on tocolysis.
  • Analysis of survey data on obstetricians' usage of tocolytic agents.

Main Results:

  • Nifedipine shows superior tocolytic properties and better neonatal outcomes compared to betamimetics, which are being abandoned.
  • Magnesium sulfate lacks evidence of tocolytic effectiveness; atosiban shows promise but has concerns regarding perinatal outcomes.
  • COX-2 inhibitors like rofecoxib are under investigation for potential fetal safety benefits.

Conclusions:

  • Short-term tocolysis before 34 weeks' gestation can be beneficial to administer corticosteroids and facilitate transfer to specialized neonatal care units.
  • Nifedipine is an effective and cost-efficient tocolytic agent; atosiban is effective but expensive and not widely available.
  • Betamimetics and magnesium sulfate should be discontinued as tocolytic agents; further placebo-controlled and comparative trials are necessary to establish a definitive evidence base.

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