Pulse rate has been proposed to be a surrogate for heart rate. In this study, we investigate the correlation of three pulse rate derivation methods to heart rate. Both pulse and ECG signals were measured simultaneously. Three pulse rate extraction algorithms: moving average (MA) filter, template matching (TM) and traditional maximum peak (MP) detection algorithms were used. Mean absolute error (MAE) between gold-standard heart rate and pulse rate was used to measure the algorithms' performances. Results showed that MA had lowest MAE while MP demanded the least computation time. Optimal MA filter order between one-tenth and two-tenths of sampling frequency value is also suggested. This study opens a way to derive heart rate from pulse rate with a simple assessment which can be applied to home-care vital sign monitoring systems.
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JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING 29 (3): 132-137
