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A Microcomputer-Based Heart-Rate Variability Monitor

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2 Author(s)
Cahill, S.J. ; School of Electrical and Electronic Engineering, Ulster Polytechnic ; McClure, D G.

A cost-effective method of on-line measurement of beat-to-beat heart-rate variability is presented. Based on a commercial microcomputer, the data is formatted as a histogram covering up to 500 past events in the form of a moving time window. Analysis of the QRS peak detector used in the instrumentation shows the conditions necessary for 1 ms resolution. The system permits the on-line calculation of statistical parameters, which are presented when a hard copy of the histogram is requested.

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Biomedical Engineering, IEEE Transactions on  (Volume:BME-30 ,  Issue: 2 )