Blood pressure measuring apparatus and blood pressure measuring method

Abstract

A blood pressure measuring apparatus (1) includes a pressure control unit (3) that controls an applied pressure applied to a region of a living body in which a vein and artery exist by a cuff (2) mountable to the region, a detection unit (4) that detects pressure waveforms in which pulse wave components from the region overlap with the applied pressure, and an analysis unit (5) that obtains a respiratory variation on the waveform of artery and a venous pressure based on the pressure waveforms detected by the detection unit (4) through one-time blood pressure measurement. The analysis unit (5) obtains the respiratory variation on the waveform of artery based on data of a first pressure waveform in a first process, and the venous pressure based on data of a second pressure waveform in a second process and the data of the first pressure waveform.

Description

technical field [0001] The present invention relates to a blood pressure measuring device and a blood pressure measuring method for measuring blood pressure by using an oscillometric method. Background technique [0002] Respiratory variability of the arterial waveform and central venous pressure are important indicators when assessing hemodynamics. For example, in the prior art, to obtain the central venous pressure, a catheter is inserted to measure the correct central venous pressure. [0003] However, since the measurement method is invasive, an additional burden may be placed on the subject. Also, the measuring device is large and takes a long time to measure. For this reason, a method of measuring central venous pressure by a non-invasive and simple method has been proposed. For example, JP-A-2012-205822 discloses measuring mean venous pressure by using the principle of oscillometric method. Also, JP-A-2011-511686 discloses measuring arterial pressure and pulse pre...

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Problems solved by technology

[0004] However, since the mean venous pressure measured by the method disclosed in JP-A-2012-205822 and the respiratory variation of the arterial waveform measured by the method disclosed in JP-A-2011-511686 are respectively measured by separate methods, it is considered that The correlation between the two is not necessarily high

For this reason, hemodynamic estimates based on measured parameters do not necessarily have sufficient reliability

Also, since each parameter is measured separately, it takes time to measure these parameters and affects rapid diagnosis

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