Semi-auto Blood Pressure Monitor
In blood pressure monitor manufacturers apparatus which continuously estimates and
monitors blood pressure by using the pulse wave propagation time, blood pressure fluctuation can be accurately estimated. If both blood pressure estimated from the pulse wave propagation time and a waveform parameter obtained from the accelerated pulse wave have abnormal values, it is determined that the blood pressure is truly fluctuating, and blood pressure monitor manufacturers measurement by another method, e.g., blood pressure measurement using a cuff is performed.
Blood pressure monitor manufacturers apparatus comprising: blood pressure measuring unit adapted to measure blood pressure in response to blood pressure measurement designation; pulse wave acquiring unit adapted to acquire a pulse wave in a predetermined location of a living body; pulse wave propagation time calculating unit adapted to calculate a pulse wave propagation time from the pulse wave, and one of an electrocardiogram and a pulse wave acquired from a location different from the predetermined location; estimated blood pressure monitor manufacturers calculating unit adapted to calculate an estimated blood pressure on the basis of the pulse wave propagation time; accelerated pulse wave calculating unit adapted to calculate an accelerated pulse wave from the pulse wave; waveform parameter calculating unit adapted to calculate a predetermined waveform parameter from a waveform contained in the accelerated pulse wave; and control unit adapted to provide the blood pressure measurement designation to said blood pressure measuring unit to cause said blood pressure measuring unit to measure blood pressure, if both the estimated blood pressure monitor manufacturers and the predetermined waveform parameter are abnormal.
The apparatus according to claim 1, wherein said control unit determines whether the predetermined parameter is abnormal by comparing a value of the predetermined parameter with a predetermined normal range, and wherein the predetermined normal range is determined in accordance with blood pressure monitor manufacturers measured last by said blood pressure measuring unit.
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