Winn R, Hildebrandt J R, Hildebrandt J
J Appl Physiol Respir Environ Exerc Physiol. 1977 Aug;43(2):379-81. doi: 10.1152/jappl.1977.43.2.379.
A semicontinuous but noninvasive blood pressure monitoring system is described. It consists of a commercial electronic sphygmomanometer which utilizes a microphone under an occluding arm cuff to detect the Korotkoff sounds, a pressure transducer, and a simple gating circuit. The gate passes the cuff pressure signal to a recorder only when a proper Korotkoff sound is detected. The cuff is rapidly inflated to just above the anticipated systolic pressure, then deflated at a steady rate of 2-6 Torr/heartbeat. When diastolic pressure is passed, the cuff is fully deflated momentarily before repeating the cycle. Systolic and diastolic pressures can be recorded up to 3 or 4 times/min. Spurious signals are rejected by the electronics which process the output of the microphone. This allows the use of the system in experiments on exercising man and in environments where unwanted signals exist. The system offers greater versatility than commercial semiautomatic pressure monitors, at less than half the cost.
本文描述了一种半连续但非侵入性的血压监测系统。它由一台商用电子血压计组成，该血压计利用置于袖带下方的麦克风检测柯氏音，还包括一个压力传感器和一个简单的门控电路。只有在检测到适当的柯氏音时，门控电路才会将袖带压力信号传输至记录仪。袖带会迅速充气至略高于预期收缩压的水平，然后以2 - 6托/心跳的稳定速率放气。当舒张压通过后，袖带会在重复该循环之前瞬间完全放气。收缩压和舒张压每分钟最多可记录3至4次。电子设备会处理麦克风的输出，从而滤除虚假信号。这使得该系统能够用于对运动中的人体进行实验，以及存在不需要信号的环境中。该系统比商用半自动压力监测仪具有更高的通用性，且成本不到其一半。
