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应力容积描记是通过一个可控制压力的压脉带缚住肢体以阻断静脉,测得受检部分容积的改变,并测算出这部分肢体的局部血流量。测定局部收缩压,不仅能用来研究肢体的动脉循环,而且也能研究其静脉循环情况。这个研究领域已引起生理学家和临床医生的极大兴趣。应力容积描记法的优点是以静脉阻断原理能定量测定肢体局部血流量,并可计算动脉流入血量。目前采用自动ECG容积描计,能够对肢体的血流平均每分钟进行215次测定,不仅能够记录静止值,而且通过半连续的动态测定能够研究一些物理、化学和药物刺激时的循环功能。动脉阻断引起最大的充血反
Stress-volume tracing is the cupping of the limbs by a pressure-controlled cuff to block the veins, measuring changes in the volume of the examined portion and measuring the local blood flow in that portion of the limb. Determination of local systolic blood pressure, not only can be used to study the limbs of the arterial circulation, but also to study the venous circulation. This area of research has drawn great interest among physiologists and clinicians. The advantage of stress plethysmography is that the principle of venous occlusion can quantitatively measure the blood flow of limbs and calculate the amount of arterial inflow. The current automated ECG plethysmography enables an average of 215 measurements per minute for limb blood flow not only to record resting values but also to investigate some of the circulatory functions of physical, chemical and drug stimuli by semi-continuous kinetic assays. Arterial blockade caused the largest congestive