Sacks A H
Angiology. 1979 Oct;30(10):683-95. doi: 10.1177/000331977903001005.
The indirect measurement of arterial blood pressure is discussed from the standpoint of the intravascular phenomena that occur under the cuff during the production of Korotkoff sounds. The influence of the physical and elastic properties of the vessel wall and blood flow parameters on indirect blood pressure measurement were investigated by using the results of model studies carried out in a properly scaled, simulated mechanical system under controlled conditions. The results of those studies indicate that auscultatory readings may be subject to large errors, depending on the thickness and stiffness of the artery wall. These results are shown to be consistent with comparisons of direct and indirect blood pressures in human subjects in that errors of the order of 30 to 50 mm Hg are not uncommon in the elderly or in patients with advanced arteriosclerosis. The errors discussed here are inherent to the auscultatory technique and are not related to instrument calibration, auditory acuity, or office technique.
从柯氏音产生过程中袖带下方血管内发生的现象的角度，讨论了动脉血压的间接测量。通过在可控条件下，在适当比例的模拟机械系统中进行模型研究的结果，研究了血管壁的物理和弹性特性以及血流参数对间接血压测量的影响。这些研究结果表明，听诊读数可能会有很大误差，这取决于动脉壁的厚度和硬度。这些结果与人体受试者直接血压和间接血压的比较结果一致，即在老年人或晚期动脉硬化患者中，30至50毫米汞柱量级的误差并不罕见。这里讨论的误差是听诊技术所固有的，与仪器校准、听力敏锐度或操作技术无关。
