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Non-invasive Determination of Instantaneous Brachial Blood Flow Using the Oscillometric Method by Shing-Hong Liu; Jia-Jung Wang; Da-Chuan Cheng is a Medicine article available to read on EtoBox.

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The oscillometric method has been widely used to measure arterial systolic and diastolic blood pressures, but its potential for arterial blood flow measurements still remains to be explored. The aim of this study was to noninvasively determine arterial blood flow using an oscillometric blood flow measurement system. The system consists of a pneumatic elastic cuff, an air-pumping motor, a releaser valve, a pressure transducer, and an airflow meter. To build a non-linear cuff model, we measured airflow pumped into the pneumatic cuff and cuff pressure using an airflow meter and pressure transducer during the inflation period, respectively. During the deflation period, only the pressure transducer was used to record cuff pressure. Based on the cuff model, the oscillometric blood flow waveform was obtained by integrating the oscillometric pressure waveform. We compared arterial blood flow derived from the maximum amplitude of the oscillometric blood flow waveform with Dopplermeasured blood flow calculated with the diameters and blood velocities of the brachial arteries in 32 subjects who underwent diagnostic evaluations for peripheral arterial embolism. A linear correlation coefficient

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Author

Shing-Hong Liu; Jia-Jung Wang; Da-Chuan Cheng

Publisher

Walter de Gruyter GmbH

Published

2009

Language

EN

Field

Medicine (Health Sciences)