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Related Experiment Videos

Direct antenatal fetal electrocardiographic waveform analysis.

S Arulkumaran1, U Nicolini, N M Fisk

  • 1Royal Postgraduate Medical School, Queen Charlotte's and Chelsea Hospital, London, UK.

British Journal of Obstetrics and Gynaecology
|August 1, 1991
PubMed
Summary

A new technique allows continuous recording of fetal electrocardiograms (ECG) during antenatal procedures. This method may aid in diagnosing fetal cardiac issues and monitoring growth retardation.

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Area of Science:

  • Obstetrics and Gynecology
  • Fetal Medicine
  • Cardiology

Background:

  • Continuous fetal electrocardiogram (ECG) monitoring is crucial for antenatal assessment.
  • Existing methods for fetal ECG recording in utero have limitations.
  • Waveform analysis of fetal ECG can provide insights into fetal well-being.

Purpose of the Study:

  • To establish a novel technique for continuous recording of fetal electrocardiograms (ECG) for waveform analysis during the antenatal period.
  • To assess the feasibility and utility of this technique in a clinical setting.

Main Methods:

  • A prospective descriptive study was conducted in a Fetal Medicine Unit.
  • A technique involving an insulated Cooner wire attached to a sampling needle and an ECG-ST waveform analyser was employed.

Related Experiment Videos

  • ECG signals were obtained from 20 fetuses (16-38 weeks gestation) during antenatal fetal blood sampling procedures.

    • Main Results:

    • Continuous recording of the T/QRS ratio was achieved for a mean of 8 minutes per fetus (total 166 minutes).
    • The T/QRS ratio showed no correlation with gestational age or fetal heart rate.
    • Observed T/QRS ratios were comparable to those reported in term fetuses during labor.

    Conclusions:

    • The described technique enables continuous fetal ECG recording and ST waveform analysis antenatally.
    • This method holds potential for investigating fetal cardiac arrhythmias and intrauterine growth retardation.
    • The technique may also be valuable for monitoring fetal well-being during transfusions.