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Induction of labor with pulsatile oxytocin by a computer-controlled pump
R J Willcourt1, D Pager, J Wendel
1Department of Obstetrics and Gynecology, Kapiolani Medical Center for Women and Children, Honolulu, Hawaii.
American Journal of Obstetrics and Gynecology
|February 1, 1994
Summary
A computer-controlled pulsatile oxytocin infusion protocol safely and effectively induced labor, minimizing oxytocin dosage. This method proved comparable to continuous infusions, except for aggressive management in nulliparous women.
Area of Science:
- Obstetrics and Gynecology
- Reproductive Medicine
- Clinical Pharmacology
Background:
- Oxytocin is commonly used for labor induction.
- Current infusion protocols may lead to high dosages.
- Optimizing oxytocin delivery is crucial for maternal and fetal outcomes.
Purpose of the Study:
- To evaluate the safety and efficacy of a computer-controlled pulsatile oxytocin infusion protocol.
- To compare this protocol against continuous infusion methods for labor induction.
- To assess the impact of oxytocin dosage on labor induction success.
Main Methods:
- Prospective, randomized clinical trial involving 310 women.
- Comparison of three labor induction protocols: aggressive continuous, conservative continuous, and computer-controlled pulsatile oxytocin infusion.
- Statistical analysis using Student t and chi 2 goodness-of-fit tests.
Main Results:
- Pulsatile oxytocin infusion used approximately 20% of the dosage compared to continuous infusions.
- All protocols successfully induced labor in most patients.
- No significant differences in cesarean section rates, hyperstimulation, blood gases, or Apgar scores across groups.
Conclusions:
- Computer-controlled pulsatile infusion significantly minimized oxytocin dosage.
- Induction success rates were similar across protocols, with a noted lower success in aggressively managed nulliparous women.
- The pulsatile protocol offers an effective alternative for labor induction with reduced oxytocin exposure.