QT DURATION AND DISPERSION IN ANGINA AND MYOCARDIAL INFARCTION
We have studied 176 men, including 84 with acute myocardial infarction (mean age 59,2±2,2), 92 (mean age 49,2±3,5) with angina of various functional classes. We have registered 12-lead ECG at rest (50 mm/sec) to all simultaneously. QT and QTc dispersion were calculated as the difference between thei...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Russian |
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«FIRMA «SILICEA» LLC
2001-04-01
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| Series: | Российский кардиологический журнал |
| Online Access: | https://russjcardiol.elpub.ru/jour/article/view/2140 |
| Summary: | We have studied 176 men, including 84 with acute myocardial infarction (mean age 59,2±2,2), 92 (mean age 49,2±3,5) with angina of various functional classes. We have registered 12-lead ECG at rest (50 mm/sec) to all simultaneously. QT and QTc dispersion were calculated as the difference between their maximal and minimal durations in all the 12 leads. The prognostic role of QT dispersion as a marker of potentially life-threatening arrhythmias, is insufficient in the angina group. Unlike those, patient with acute myocardial infarction demonstrate a far greater role QT time parameters in predicting potentially life-threatening arrhythmias; with QT dispersion sensitivity and specificity (threshold > 50 msec) proved 82,2% and 85,8% respectively, and for QTc (threshold ≥ 70 msec) – 88,1% and 94,5%. |
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| ISSN: | 1560-4071 2618-7620 |