文档介绍：Regional Cold Stress Leads to an Upforward Shift in
the Whole Elastance Curve of Arterial Wall
Jia-Jung Wang Steven Chang
Department of Biomedical Engineering Department of Biomedical Engineering
I-Shou University I-Shou University
Kaohsiung, Taiwan Kaohsiung, Taiwan
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Chun-Peng Liu
Department of Internal Medicine
Kaohsiung Veterans General Hospital
Kaohsiung, Taiwan
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Abstract—The purpose of this study was to assess the time-
dependent elastance of the radial arterial wall using a sinusoidal
vibration method in room temperature and cold stress conditions. II. METHODS
When a tiny sinusoidal displacement with varying frequencies is
imposed on the superficial radial artery, its wall elastance can be A measurement system consisting mainly of a micro-
derived from the reactive force of the wall, and the amplitude vibration generator, a force-sensing device, an analog-to-
and frequency of the small displacement. The results showed in digital and digital-to-analog converters, and a personal
℃
20 healthy subjects that the 5-min cold stress with 4 ice puter was constructed to determine radial arterial time-
significantly increased the dynamic range of the radial wall varying elastance curve using the minute vibration method.
elastance from ± ×104 dyne/cm (at room temperature)