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Related Experiment Videos

Randomised evaluation of a prototype suction fetal scalp electrode

A M Gülmezoĝlu1, V C Nikodem, G J Hofmeyr

  • 1Department of Obstetrics and Gynaecology, Coronation Hospital, Johannesburg, South Africa.

British Journal of Obstetrics and Gynaecology
|June 1, 1996
PubMed
Summary
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A new suction fetal scalp electrode was less successful to apply than the spiral electrode but caused less discomfort and was preferred by women. It avoids fetal scalp penetration, offering a safer alternative for fetal heart rate monitoring.

Area of Science:

  • Obstetrics and Gynecology
  • Fetal Monitoring
  • Medical Device Technology

Background:

  • Direct fetal heart rate monitoring is crucial during labor for assessing fetal well-being.
  • Traditional spiral electrodes carry risks such as scalp trauma and infection.
  • A prototype suction fetal scalp electrode was developed to offer a less invasive alternative.

Purpose of the Study:

  • To compare the performance and acceptability of a prototype suction fetal scalp electrode against a standard double helix spiral electrode.
  • To evaluate application success, detachment rates, tracing quality, scalp trauma, and patient preference.

Main Methods:

  • A randomized controlled trial was conducted with 100 women in active labor requiring direct fetal heart rate monitoring.
  • Fetal scalp electrodes (suction prototype vs. spiral) were applied to the presenting part.

Related Experiment Videos

  • Performance metrics included application success, detachment, tracing quality, scalp trauma, and patient-reported discomfort and preference.

    • Main Results:

    • The suction electrode had a significantly lower application success rate (30%) compared to the spiral electrode (2%).
    • Detachment rates were similar between the two devices.
    • The suction electrode resulted in more average-quality tracings and was associated with less maternal discomfort and higher patient preference.
    • Three instances of scalp bleeding occurred with the spiral electrode, with none reported for the suction electrode.

    Conclusions:

    • The suction electrode offers an advantage by avoiding fetal scalp penetration, addressing patient concerns about pain and infection risks associated with needle electrodes.
    • Despite lower initial application success rates, the benefits of the suction electrode may outweigh its drawbacks for direct fetal heart rate monitoring.
    • Further refinement of the suction electrode prototype may improve its application success rates, making it a potentially superior option for fetal monitoring.