PubMed · 316055
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F J Taylor, V Shenoy, C P Olinger, J F Wasserman. 1979. Aneurysm detection using one-bit correlation.. https://doi.org/10.1007/bf02447055
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Antenatal cardiotocography has become the primary method of evaluation of fetal wellbeing, and the relationship between the presence of fetal heart rate accelerations in response to fetal movement and subsequent good fetal outcome has been demonstrated. However, in areas where electronic monitors are few or not available it would be useful if such accelerations could be demonstrated using the Pinard stethoscope. A prospective study involving 200 women with a singleton pregnancy of more than 34 weeks gestation was performed at Harare Maternity Hospital, Harare, Zimbabwe, when a 6 min electronic trace using an external transducer was compared with simultaneously performed 6 min manual record using the Pinard stethoscope. The findings showed that the manual record has a sensitivity of 75% and although traces with excessive base line variability would show an acceleration on the manual record, in no case with a flat trace was an acceleration noted on the manual record. This acceptable degree of sensitivity would allow for a significant decrease in the number of women being referred for electronic tracing and would be a more appropriate use of limited resources in terms of manpower and equipment.
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