System and method for accurately monitoring the cardiovascular state of a living subject
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
Jun 6, 1997
filing date -
Jun 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A blood-pressure measurement system accurately monitors a living subject's cardiovascular state, even if the living subject's blood pressure changes during a measurement, the living subject exhibits frequent arrhythmias, or motion artifacts are present during the blood-pressure measurement. The blood-pressure measurement system of this invention provides an arrhythmia-pulse correcting circuit that corrects the amplitudes of oscillometric pulses produced by arrhythmias. An oscillometric-systolic-pressure correcting circuit corrects the measured systolic oscillometric blood pressure when a living subject's blood pressure is changing during the oscillometric blood-pressure measurement. A quality-assurance and data-checking circuit determines the reliability of the oscillometric blood-pressure values, determines the cause of problems in the blood-pressure measurement process, alerts a user if a reliable oscillometric blood-pressure measurement cannot be obtained and performs user-specified living subject evaluation checks.
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