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Am J Perinatol 1986; 3(2): 123-126
DOI: 10.1055/s-2007-999847
ORIGINAL ARTICLE

© 1986 by Thieme Medical Publishers, Inc.

Analysis of Fetal Activity and Maternal and Fetal Heart Rate Using a Laboratory Minicomputer

John Patrick, Karen Campbell, Lesley Carmichael, Carol Probert
  • The Canadian Medical Research Council Group in Reproductive Biology, Departments of Obstetrics, Gynecology, and Physiology, University of Western Ontario, London, Ontario, Canada
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Publication Date:
04 March 2008 (online)

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ABSTRACT

Using a PDP-11 minicomputer, a system was developed for real-time acquisition of fetal breathing, body movement, and heart rate data. Analogue event pulses were input electronically to a DR-11 16 channel A/D, D/A interface and the event times were measured using an AR-11 real-time clock. Event times were stored for comprehensive off-line analysis and useful data summaries were also provided on-line. The on-line printouts enabled investigators to examine the quality of the data at the time of the study. The system has resulted in faster data acquisition and analysis and greater accuracy of measurement.