METHODS AND APPARATUS FOR MEASURING BLOOD PRESSURE BY THE OSCILLOMETRIC TECHNIQUE

摘要

A method and apparatus for measuring blood pressure by the oscillometric technique. The method incorporates variable PIP's (Parameter Identification Point). The method comprises the steps of obtaining a value for the peak amplitude Amax of an oscillometric envelope; determining a cuff pressure, CP, which corresponds in time with Amax, this pressure representing the MAP of the subject; computing a variable value PIPSBP as a function of MAP (Mean Anterial Blood Pressure); performing the calculation Asbp = Amax * PIPSBP to determine a systolic amplitude value Asbp along the oscillometric envelope; and determining the cuff pressure C which corresponds in time to Asbp, this value representing the systolic blood pressure (SBP) of the subject. PIP can be calculated using a piece-wise linear, polynomial, exponential or other function.