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Saltatory fetal heart rate pattern.

N E O'Brien-Abel1, T J Benedetti

  • 1Department of Obstetrics and Gynecology, University of Washington, Seattle 98195.

Journal of Perinatology : Official Journal of the California Perinatal Association
|March 1, 1992
PubMed
Summary

The rare saltatory fetal heart rate pattern, observed in 2.3% of term infants, appears benign. It was not seen in preterm fetuses and was associated with factors like ephedrine administration or uterine hyperstimulation.

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Area of Science:

  • Obstetrics
  • Fetal Monitoring
  • Perinatology

Background:

  • The saltatory fetal heart rate pattern is an uncommon finding during labor.
  • Understanding its incidence and associations is crucial for accurate fetal well-being assessment.

Purpose of the Study:

  • To determine the incidence of the saltatory fetal heart rate pattern in intrapartum fetal heart tracings.
  • To identify factors associated with the saltatory pattern and assess its impact on fetal outcomes.

Main Methods:

  • A retrospective descriptive study analyzed 433 intrapartum fetal heart tracings.
  • The saltatory pattern was defined by specific amplitude and frequency criteria.
  • Data on maternal and fetal factors, labor events, and infant outcomes were collected.

Main Results:

  • The saltatory pattern occurred in 2.3% of tracings, exclusively in term fetuses (38-42 weeks' gestation).
  • Associations included parenteral ephedrine administration (≥30 mg), uterine hyperstimulation, and cervical examination.
  • All infants with the saltatory pattern had normal Apgar scores and exhibited normal short-term and long-term variability.

Conclusions:

  • The saltatory fetal heart rate pattern is a benign finding in term neonates.
  • Its presence, particularly when accompanied by normal variability, does not indicate fetal distress.
  • Further research could explore the precise mechanisms linking ephedrine and uterine activity to this pattern.

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