subject: Blood Pressure Monitor Helps You Know Your Pulse Wave [print this page] Blood pressure monitoring apparatus normally performs control such that if blood pressure monitor manufacturers continuously measured on the basis of the pulse wave propagation time is abnormal, more accurate blood pressure measurement is performed by using a cuff or the like, and an alarm is output if an abnormal value is detected by this measurement.
Blood pressure measurement using a cuff is established as a method of noninvasively measuring the blood pressure, and effective to automatically obtain a well reliable blood pressure monitor manufacturers. However, this method requires avascularization, so the frequent use of the method is undesirable because the load on a patient increases. Therefore, accurate determination of the need for cuff blood pressure measurement is important not only to perform an appropriate therapy but also to reduce the load on a patient.
To increase the determination accuracy as described above, it is also important to increase the accuracy of the estimated blood pressure based on the pulse wave propagation time calculated from an ECG and a pulse wave observed at one point.
According to one aspect of the present invention, there is provided a blood pressure monitoring apparatus comprising: blood pressure monitor manufacturers 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 the blood pressure measuring unit to cause the blood pressure measuring unit to measure blood pressure, if both the estimated blood pressure and the predetermined waveform parameter are abnormal.
