Cart (Loading....) | Create Account
Close category search window
 

Automated blood pressure measurement: Reasons for measurement variability uncovered

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Dingchang Zheng ; Regional Med. Phys. Dept., Newcastle Univ., Newcastle upon Tyne, UK ; Amoore, J.N. ; Mieke, S. ; Smith, F.E.
more authors

The most common automated blood pressure devices determine systolic, diastolic and mean arterial blood pressure (SBP, DBP and MAP) by analysing the oscillometric pulse waveform. The aim of this study was to assess the variability of the amplitude of oscillometric pulse waveform characteristics at SBP, DBP and MAP. Sixty oscillometric waveforms from twenty subjects were analysed. Manual SBP and DBP were obtained with a manual sphygmomanometer, from which manual MAP was calculated from the empirical equation. Automated MAP was estimated from the maximum oscillometric pulse. The oscillometric pulse amplitudes, normalised to the maximum pulse, at above SBP, SBP, MAP, DBP and below DBP were then determined. The cuff pressures at half the maximum oscillometric pulse amplitude were also measured. There were significant differences in normalised oscillometric pulse amplitude between SBP and DBP (mean ± SD: 0.45 ± 0.10 vs 0.80 ± 0.12, P < 0.001), and between manual and automated MAP (0.89 ± 0.09 vs 1.00 ± 0, P < 0.001). Manual SBP (118 ± 11 mmHg) and DBP (76 ± 9 mmHg) were significantly different from the cuff pressures at half the maximum oscillometric pulse amplitude (117 ± 12 mmHg and 66 ± 10 mmHg), with the paired differences of 1 ± 5 mmHg (P < 0.05) and 10 ± 7 mmHg (P < 0.001) respectively. Significant differences between manual and automated MAP were also observed, with the paired difference of 3 ± 6 mmHg (P < 0.001). In conclusion, there are large variations in the pulse characteristics at SBP, DBP and MAP. This complicates a reliable automatic estimation of these values.

Published in:

Computers in Cardiology, 2009

Date of Conference:

13-16 Sept. 2009

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.