Abstract:
:The purpose of the present study is to assess QT-interval measurements from the EASI 12-lead electrocardiogram (ECG) as compared with the standard 12-lead ECG. The QT interval was automatically determined in simultaneously recorded standard and EASI 12-lead ECGs, using a validated wavelet-based delineator. The agreement between the 2 sets of measurements was quantified both on a lead-by-lead basis and a multilead basis with global definitions of QRS onset and T-wave end. The results show that the agreement between QT-interval measurements from the 2 lead systems is acceptable, with negligible mean differences and with correlation coefficients ranging from 0.91 to 0.98 depending on the lead studied. Although the SD shows a clear dependence on the selected lead (ranging from 9.2 to 26.4 milliseconds), differences are within the accepted tolerances for automatic delineation. In a few patients, large differences were found, mainly because of changes in morphology present in both lead systems. QT intervals measured by the multilead approach were considerably more stable than single-lead measurements and resulted in a much better agreement between the 2 lead systems (correlation coefficient, 0.98; QT difference, 1.1 +/- 9.8 milliseconds). Thus, the EASI 12-lead ECG may be used for reliable QT monitoring when the multilead delineation approach is adopted.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Martínez JP,Laguna P,Olmos S,Pahlm O,Pettersson J,Sörnmo Ldoi
10.1016/j.jelectrocard.2006.08.089subject
Has Abstractpub_date
2007-04-01 00:00:00pages
172-9issue
2eissn
0022-0736issn
1532-8430pii
S0022-0736(06)00239-1journal_volume
40pub_type
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journal_title:Journal of electrocardiology
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journal_title:Journal of electrocardiology
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journal_title:Journal of electrocardiology
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journal_title:Journal of electrocardiology
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journal_title:Journal of electrocardiology
pub_type: 杂志文章
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journal_title:Journal of electrocardiology
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pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2005.01.003
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pub_type: 杂志文章
doi:10.1016/0022-0736(89)90037-x
更新日期:1989-07-01 00:00:00
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journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(79)80046-1
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doi:10.1054/jelc.2002.33766
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pub_type: 临床试验,杂志文章
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更新日期:1988-01-01 00:00:00
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更新日期:2018-01-01 00:00:00
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journal_title:Journal of electrocardiology
pub_type: 杂志文章,评审
doi:10.1054/jelc.2001.28859
更新日期:2001-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:1975-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2018-01-01 00:00:00
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journal_title:Journal of electrocardiology
pub_type: 杂志文章
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更新日期:2020-01-01 00:00:00
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doi:10.1016/0022-0736(90)90163-v
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