Abstract:
:Body surface potential mapping is superior to 12-lead electrocardiogram in detection of acute and old myocardial infarctions. We examined the capability of the ST-T integral and T wave to detect exercise-induced ischemia in body surface potential mapping. Body surface potential mapping with 123 channels was recorded in 70 subjects: 45 coronary artery disease (CAD) patients and 25 healthy controls during supine bicycle exercise testing. Of the patients, 18 had anterior, 14 posterior, and 13 inferior ischemia documented by coronary angiography and thallium scintigraphy. The ST-T isointegral area, as well as the positive and negative ST-T area, and the T-wave apex amplitude were determined. Discriminant index analysis was used to find the sites that optimally separated patient subgroups from other patients and controls. In the pooled CAD group, the optimal sites for detecting the decrease in ST-T isointegral, in the positive ST-T area and in the T-wave amplitude were over the left side (ST-T isointegral area: CAD -3.8 +/- 14 microVs and controls 24 +/- 14 microVs; T-wave amplitude: CAD 3 +/- 110 microV and controls 190 +/- 90 microV; P <.001, both). The area under the receiver operating characteristic curve for the decrease in ST-T isointegral, in the positive ST-T area, and in the T-wave amplitude and for the ST depression were 94%, 95%, 92%, and 93%, respectively. T wave performed especially well in patients with multivessel disease. In stepwise logistic regression analysis, using the presence of CAD as the dependent parameter, the decrease in the positive ST-T area and ST depression were the only parameters that entered the model. ST-T area and T-wave amplitude are sensitive and specific markers of transient myocardial ischemia. ST-T area contains information additional to ST depression and has thus independent discriminative value in ischemia detection.
journal_name
J Electrocardioljournal_title
Journal of electrocardiologyauthors
Hänninen H,Takala P,Rantonen J,Mäkijärvi M,Virtanen K,Nenonen J,Katila T,Toivonen Ldoi
10.1054/jelc.2003.50013keywords:
subject
Has Abstractpub_date
2003-04-01 00:00:00pages
89-98issue
2eissn
0022-0736issn
1532-8430pii
S0022073603000086journal_volume
36pub_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
pub_type: 杂志文章
doi:10.1016/s0022-0736(86)80006-1
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abstract:BACKGROUND:For the assessment of patients with chest pain, the 12-lead electrocardiogram (ECG) is the initial investigation. Major management decisions are based on the ECG findings, both for attempted coronary artery revascularization and risk stratification. The aim of this study was to determine if the current 6 pre...
journal_title:Journal of electrocardiology
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更新日期:2011-07-01 00:00:00
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pub_type: 临床试验,杂志文章
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更新日期:2006-07-01 00:00:00
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更新日期:2007-11-01 00:00:00
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journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(76)80009-x
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journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(82)80014-9
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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,多中心研究
doi:10.1016/j.jelectrocard.2015.12.007
更新日期:2016-03-01 00:00:00
abstract::Frank vectorcardiograms (VCGs) were collected on magnetic tape for 666 normal newborn infants at 1, 6, 12, 24, 36, 48, 60, and 72 hours after birth and analyzed by computers. The final total included 1,337 VCGs for white babies and 413 for blacks. No previous report has been made for the normal neonate with such a lar...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(77)80027-7
更新日期:1977-01-01 00:00:00
abstract::Although solid angle analysis has been considered to be reasonable for explaining the distribution of ST segment deviation following ischemia, it has not been tested fully, especially for ST segment changes in various sites at different lead surfaces. Thus, we investigated the applicability of solid angle theory to th...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/s0022-0736(86)80033-4
更新日期:1986-07-01 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:1985-10-01 00:00:00
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journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2019.01.085
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Possible similarities or differences in the ST- and PR-segment deviations in the electrocardiogram of takotsubo cardiomyopathy (TTC) and acute pericarditis (AP) are not well defined. METHODS:We compared different parameters of the admission electrocardiogram in eight patients with TTC and eight patients wit...
journal_title:Journal of electrocardiology
pub_type: 杂志文章
doi:10.1016/j.jelectrocard.2012.11.013
更新日期:2013-03-01 00:00:00