Related Experiment Video
Updated: Aug 15, 2026

Assessing Endothelial Vasodilator Function with the Endo-PAT 2000
Published on: October 15, 2010
[Evaluation of an automatic sphygmomanometer]
Abstract:
In clinical evaluation of a new type of automatic sphygmomanometer, a strict comparability of results with the standard indirect auscultatory method is required. We have compared the oscillometric apparatus BP 103 N Nippon Colin (B) with the Hawksley random zero mercury sphygmomanometer (A) in a stratified sample of 26 subjects using a cross-over design of four simultaneous pairs of measurements in both arms by two observers. Mean values obtained by machine B were higher than values obtained by machine A, by 0.56 kPa systolic and by 0.62 kPa diastolic. Analysis of variance showed that the differences between both machines were within the random variability of blood pressure values obtained, and therefore irrelevant at single measurements. In case of blood pressure measurements in an epidemiological study, a correction of values should be done using the regression model B = K. A degrees.
Related Concept Videos
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
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...
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Measurement of Blood Pressure

