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

Calculating stable reference potentials for measuring ECG wave amplitudes across a range of heart rates

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

4 Author(s)
Wenfeng Duan ; Med. Phys. Dept., Newcastle Univ., Newcastle upon Tyne, UK ; Dingchang Zheng ; Langley, P. ; Murray, A.

The UP segment is the normal isoelectric reference level for ECG wave amplitude measurements but becomes obscured at high heart rates. The aim was to identify alternative reference levels suitable for use across a wide range of heart rates. 12-lead ECGs were recorded from 10 healthy subjects before and immediately following exercise. Amplitudes of the UP segment, Q wave, end of T wave (Tend) and zero voltage level, all relative to PQ level were measured from V3. The performances of beat waveform averaging (AvgBeat) and mathematical averaging of separate beat measurements (AvgVal) on reducing the influence of noise and measurement errors were compared. Due to merging of P and U waves at high heart rates, the UP segment amplitude was measurable in only approximately 71% when the heart rate was over 120 b/min. Both the UP segment amplitude and Tend amplitude tended to be overestimated at high heart rates. The standard deviations (SDs) were 0.02, 0.005, 0.021 and 0.016 mV for UP segment, Q wave, end of T wave (Tend) and zero voltage levels over the range of heart rates when using AvgVal. The SDs of amplitudes measured by AvgBeat and AvgVal methods were significantly lower than those measured from single beats (p <; 0.05) for almost all features. Generally, these two methods achieved comparable performance on reducing measurement variability.

Published in:

Computing in Cardiology (CinC), 2012

Date of Conference:

9-12 Sept. 2012

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.