A system for non-invasively measuring blood pressure on a treadmill
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Published on: March 21, 2013
T Chong-pong Au1, J G Webster, B T Tan
1Department of Electrical and Computer Engineering, University of Wisconsin, Madison 53706-1691, USA.
Abstract:
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.
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Equipments Used To Measure Blood Pressure
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Measurement of Blood Pressure
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
Assessment of blood pressure in brachial artery(two-step method)
Assessing Blood pressure in the Leg
Preparation:
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:

