Ratio-independent blood pressure estimation by modeling the oscillometric waveform envelope

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Ratio-independent blood pressure estimation by modeling the oscillometric waveform envelope

Forouzanfar, Mohamad and Dajani, Hilmi R. and Groza, Voicu Z. and Bolic, Miodrag and Rajan, Sreeraman and Batkin, Izmail

IEEE Transactions on Instrumentation and Measurement 2014

Abstract : Oscillometry is the most common measurement method used in electronic blood pressure (BP) monitors. However, most of the existing oscillometric algorithms employ empirical ratios on the oscillometric waveform envelope (OMWE) to determine the systolic pressure (SP) and diastolic pressure (DP). As these algorithms do not consider the cardiovascular system parameters that may vary due to health conditions or age, the pressure estimates are not always reliable. In this paper, we develop a new mathematical model for the OMWE by incorporating an existing model of the cuff-arm-artery system.

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