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Related Experiment Videos

A comparison between computerised (mean range) and clinical visual cardiotocographic assessment.

L C Cheng1, D M Gibb, R A Ajayi

  • 1Fetal Assessment Unit, King's College Hospital, Denmark Hill, London, UK.

British Journal of Obstetrics and Gynaecology
|October 1, 1992
PubMed
Summary

Computerised cardiotocographic (CTG) analysis closely correlates with clinical visual assessment for fetal monitoring. While the computer system showed some false positives, it offers an objective measure for evaluating fetal well-being.

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Area of Science:

  • Obstetrics and Gynecology
  • Fetal Monitoring
  • Medical Technology

Background:

  • Cardiotocography (CTG) is a standard method for assessing fetal well-being.
  • Clinical visual analysis of CTG traces relies on experienced interpretation.
  • Objective, quantifiable methods for CTG analysis are desirable.

Purpose of the Study:

  • To compare the accuracy and agreement of computerised CTG analysis with traditional clinical visual assessment.
  • To evaluate the utility of a computerised system for objective fetal heart rate analysis.

Main Methods:

  • A retrospective blind comparison of 100 CTG traces was conducted.
  • Traces were assessed using both the System 8000 computerised CTG analyser and by experienced clinical visual interpretation.

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  • Study included women with known outcomes, with CTG traces taken after 32 weeks' gestation and within 10 days of delivery.

    • Main Results:

    • A close correlation (r = 0.78, P = 0.001) was observed between computerised mean range and clinical visual CTG scores.
    • The computer system identified 13 instances of abnormal traces where visual assessment was normal (false positives), all with normal pregnancy outcomes.
    • No cases were found where computer analysis was normal and visual assessment was abnormal.

    Conclusions:

    • Computerised CTG analysis provides an objective assessment that aligns well with experienced visual interpretation.
    • The computerised system generates a numerical score that can aid in assessing fetal heart rate analysis.
    • This technology offers a valuable adjunct to traditional methods for fetal well-being assessment.