Shenoy D, von Maltzahn W W, Buckey J C
University of Texas, Arlington.
Ann Biomed Eng. 1993 Jul-Aug;21(4):351-60. doi: 10.1007/BF02368627.
Blood pressures in the temporal artery of five normotensive subjects were recorded using a modified auscultatory setup. The setup comprised a pediatric cuff to occlude the artery and a piezoelectric contact microphone to record the Korotkoff sounds. Both the cuff and microphone were held in their respective positions with an adjustable head band. The recordings were taken under four different conditions: the subject lying supine, the subject sitting at rest, the subject sitting immediately after exercise and the subject moving the head gently. These recordings were compared with readings from the brachial artery, obtained with a commercially available automatic blood pressure measuring device. Korotkoff sounds were analyzed in the time and frequency domain. Results indicate that Korotkoff sounds in the temporal artery are much smaller in amplitude, and do not exhibit the same distinctive phases as those of the brachial artery. Despite these differences, these sounds can be used to detect blood pressures at head level. The accuracy of the readings was within +/- 10%. Successful readings were also obtained with gentle head motions, demonstrating that this setup has the potential to be developed into an ambulatory blood pressure monitoring system.
使用改良的听诊装置记录了五名血压正常受试者颞动脉的血压。该装置包括一个用于阻断动脉的儿科袖带和一个用于记录柯氏音的压电接触式麦克风。袖带和麦克风都用可调节的头带固定在各自的位置。记录是在四种不同条件下进行的：受试者仰卧、受试者静息坐姿、受试者运动后立即坐姿以及受试者轻轻转动头部。将这些记录与使用市售自动血压测量装置获得的肱动脉读数进行比较。对柯氏音进行了时域和频域分析。结果表明，颞动脉中的柯氏音振幅要小得多，并且没有表现出与肱动脉相同的明显阶段。尽管存在这些差异，但这些声音可用于检测头部水平的血压。读数的准确性在±10%以内。在头部轻轻运动时也成功获得了读数，表明该装置有潜力发展成为一种动态血压监测系统。
