A SYSTEM FOR NONINVASIVELY MEASURING BLOOD-PRESSURE ON A TREADMILL

被引：8

作者：

AU, TCP

WEBSTER, JG

TAN, BT

机构：

[1] Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706-1691

来源：

PHYSIOLOGICAL MEASUREMENT | 1995年 / 16卷 / 04期

关键词：

BLOOD PRESSURE; KOROTKOFF SOUNDS; MOTION ARTIFACTS; SOUND SPECTRUM; TREADMILL EXERCISE; AUSCULTATORY METHOD; STRESS TESTING; SIGNAL TO NOISE RATIO; ELECTRONIC FILTER; FREQUENCY ANALYSIS;

D O I：

10.1088/0967-3334/16/4/007

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Measurement of signal to artifact ratio yielded optimal frequencies for a Korotkoff-based automatic system for measuring blood pressure on a treadmill. Maximal Korotkoff sounds occurred just above the crease of the elbow over the brachial artery. Output of a piezoelectric microphone and charge amplifier was measured during treadmill exercise for frequency bands from 8 to 57 Hz. An automatic system filtered output from 40 to 45 Hz, rectified it, then compared it to a threshold that had fixed and exponentially decaying components. For five subjects, the system decisions of systolic and diastolic pressures compared well with those of two observers using stethoscopes. The system shows promise for improved measurements of blood pressure during treadmill exercise.

引用

页码：273 / 285

页数：13

共 7 条

[1] BLOOD PRESSURE MEASUREMENT IN SHOCK - MECHANISM OF INACCURACY IN AUSCULTATORY AND PALPATORY METHODS [J].