Patent ID: 7393327

Claim:
Blood pressure monitoring 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 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 and the predetermined waveform parameter are abnormal.