目的 ：探讨爪甲色诊与甲床光电血管容积图的关系。
Objective:To observe the relationship between the fingernail colour and the photoplethysmogram.
分析指端光电容积脉搏波峰形动态变化有助于评估人体小动脉和微动脉血管紧张性和弹性，监测微循环血流灌注变化。
The main peak form can be used to evaluate vascular tone and elasticity of the small arteries and arteriole, and to monitor the microcirculation blood flow.
目的：评价指端容积脉搏曲线法进行心血管功能监测的准确性和适用性。
Objective:To evaluate the veracity and applicability of the finger volume blood flow pulse method in cardiovascular function monitoring.
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