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Accuracy of QT Measurement in the EASI-derived 12-lead ECG

Martinez, J P ; Laguna, P ; Olmos, S ; Pahlm, Olle LU ; Petersson, J and Sörnmo, Leif LU (2006) 1. p.3986-3989
Abstract
The purpose of this study is to assess QT interval

measurements from the EASI 12-lead ECG as compared to the

standard 12-lead ECG. The QT interval was automatically

measured in simultaneously recorded standard and EASI 12-

lead ECGs, using a validated wavelet-based delineator. The

agreement between the two sets of measurements was

quantified both on a lead-by-lead basis and a multilead basis.

The results show an acceptable agreement between QT

measurements in the two lead systems, with correlation

coefficients (CC) 0.91-0.98 depending on the lead. Standard

deviations range from 9.2 ms to 26.4 ms depending on the

selected lead. In a few... (More)
The purpose of this study is to assess QT interval

measurements from the EASI 12-lead ECG as compared to the

standard 12-lead ECG. The QT interval was automatically

measured in simultaneously recorded standard and EASI 12-

lead ECGs, using a validated wavelet-based delineator. The

agreement between the two sets of measurements was

quantified both on a lead-by-lead basis and a multilead basis.

The results show an acceptable agreement between QT

measurements in the two lead systems, with correlation

coefficients (CC) 0.91-0.98 depending on the lead. Standard

deviations range from 9.2 ms to 26.4 ms depending on the

selected lead. In a few patients large inter-system differences were found, mainly due to different T wave morphologies. Using a multilead delineation, QT intervals were considerably more stable than single-lead measurements and resulted in a much better agreement between the two lead systems (CC: 0.98, QT difference: 1.1 ms ± 9.8 ms). Thus, EASI-derived 12- lead ECG may be used for reliable QT monitoring when the multilead delineation approach is adopted. (Less)
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author
; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Conference proceedings (IEEE Engineering in Medicine and Biology Society. Conf.)
volume
1
pages
4 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • pmid:17946593
  • scopus:34047133353
ISSN
1557-170X
DOI
10.1109/IEMBS.2006.259718
language
English
LU publication?
yes
id
35404dcc-b5dc-40ff-8adc-b921bcb3636e (old id 1136542)
date added to LUP
2016-04-01 15:55:34
date last changed
2020-01-12 18:51:58
@inproceedings{35404dcc-b5dc-40ff-8adc-b921bcb3636e,
  abstract     = {The purpose of this study is to assess QT interval<br/><br>
measurements from the EASI 12-lead ECG as compared to the<br/><br>
standard 12-lead ECG. The QT interval was automatically<br/><br>
measured in simultaneously recorded standard and EASI 12-<br/><br>
lead ECGs, using a validated wavelet-based delineator. The<br/><br>
agreement between the two sets of measurements was<br/><br>
quantified both on a lead-by-lead basis and a multilead basis.<br/><br>
The results show an acceptable agreement between QT<br/><br>
measurements in the two lead systems, with correlation<br/><br>
coefficients (CC) 0.91-0.98 depending on the lead. Standard<br/><br>
deviations range from 9.2 ms to 26.4 ms depending on the<br/><br>
selected lead. In a few patients large inter-system differences were found, mainly due to different T wave morphologies. Using a multilead delineation, QT intervals were considerably more stable than single-lead measurements and resulted in a much better agreement between the two lead systems (CC: 0.98, QT difference: 1.1 ms ± 9.8 ms). Thus, EASI-derived 12- lead ECG may be used for reliable QT monitoring when the multilead delineation approach is adopted.},
  author       = {Martinez, J P and Laguna, P and Olmos, S and Pahlm, Olle and Petersson, J and Sörnmo, Leif},
  booktitle    = {Conference proceedings (IEEE Engineering in Medicine and Biology Society. Conf.)},
  issn         = {1557-170X},
  language     = {eng},
  pages        = {3986--3989},
  publisher    = {IEEE - Institute of Electrical and Electronics Engineers Inc.},
  title        = {Accuracy of QT Measurement in the EASI-derived 12-lead ECG},
  url          = {http://dx.doi.org/10.1109/IEMBS.2006.259718},
  doi          = {10.1109/IEMBS.2006.259718},
  volume       = {1},
  year         = {2006},
}