NONINVASIVE CONTINUOUS BLOOD PRESSURE DETERMINATION

D. Barschdorff, M. Erig, E. Trowitzsch

Abstract

The determination of systolic and diastolic arterial blood pressures is very important for the diagnosis of cardiovascular diseases. Common principles for noninvasive measurements are the Riva-Rocci/Korotkow- and the oscillometric methods with inflatable cuffs around an arm, wrist or finger. In our approach we use the dependency between pulse wave velocity and arterial blood pressure to calculate systolic and diastolic pressures on a beat to beat basis. The advantage is a continuous blood pressure monitoring and the reduced stress for the patient due to the reduction of cuff inflations. Because of the required calibration for each patient, conventional measurements cannot be totally evaded but are minimized to only two readings. The method is under test in a children's hospital during excercise-ECG registrations. The data acquisition and experimental setups, the digital signal processing and blood pressure calculation are described and discussed.

Keywords

blood pressure, photoplethysmogram, pulse wave velocity, continuous monitoring

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IMEKO-WC-2000-TC13-P328.pdf

DOI

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IMEKO TC

TC13 - Measurements in Biology and Medicine

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