Apparatus and method for measuring the variability of cardiovascular parameters
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United States of America Patent
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Jan 26, 1999
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N/A
app pub date -
Nov 6, 1996
filing date -
Nov 16, 1995
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Abstract
Apparatus for measuring the variability of cardiovascular parameters, having a photoplethysmographic (PPG) probe, including a modulated first light source and a photodetector, a demodulator connected to the photodetector for demodulating PPG signals detected by the photodetector, an analog to digital converter for digitizing the demodulated signals, and a processor for repeatedly analysing the PPG signals for a predetermined number of times. A method for measuring the variability of cardovascular parameters.
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