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. 1995 Apr;59(2):125-9.
doi: 10.1016/0028-2243(94)02033-b.

Computerised fetal heart rate analysis in labour--effect of sampling rate

A Chang  1 , D S Sahota, N N Reed, D K James, M P Mohajer
Affiliations

Computerised fetal heart rate analysis in labour--effect of sampling rate

A Chang et al. Eur J Obstet Gynecol Reprod Biol. 1995 Apr.

Abstract

Objective: To study the effect of sampling rate on the accuracy of fetal heart rate recording in labour.

Design: Prospective observational study.

Methods and subjects: The fetal heart rate was obtained from 153 fetuses in labour. The heart rate data was sampled at a rate of 0.5 Hz (every 2 s) and the means and standard deviations of 5-min segments compared against the mean and standard deviation for all beats in the same time interval.

Results: There was a highly significant correlation between the means (r = 0.994, p < 0.001) and standard deviations (r = 0.957, p < 0.001) of FHR sampled on successive beats compared with 2 s sampling.

Conclusion: Two second sampling of the fetal heart rate in labour will allow a highly complex analytical algorithm to process the signal in near real time for objective analysis.

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