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- W2564261605 abstract "Background and Objectives The mechanism responsible for lethal ventricular arrhythmia (LVA) after acute myocardial infarction (AMI) remains unclear. Subjects and Methods The corrected QT interval (QTc) and interval from the peak to the end of the T wave (TpTe) were measured, which indicated myocardial transmural dispersion of repolarization (TDR) in 72 patients with AMI. TpTe was also expressed as a corrected value, [TpTe/QTe]x100% and TpTe/âRR. These parameters were obtained from all the 12-leads of electrocardiography after arrival at the hospital, just before and after percutaneous coronary intervention (PCI), and at 4, 24, and 48 hours and 5 days after PCI. Results Analyzing with repeated measures analysis of variance, the TpTe, [TpTe/QTe]x100% and TpTe/âRR after AMI showed significant changes in time variance. The patients were divided into LVA (17 patients, 24%) and non-LVA group (55 patients, 76%). The [TpTe/ QTe]Ã100% (V2: 25±7% vs. 22±5%, p=0.036) and TpTe/âRR (V2: 109 ± 42 ms vs. 88 ± 22 ms, p=0.05, V3: 108±39 ms vs. 91±27 ms, p=0.048) in V2 and V3 leads were prolonged in the LVA group after PCI. The [TpTe/QTe]Ã100% (28±9 % vs. 22±5%, p=0.025) and TpTe/âRR (129±53 ms vs. 99±41 ms, p=0.05) in V3 lead were prolonged in the LVA group 24 hours after PCI. Conclusion The mechanisms responsible for LVA after AMI may be associated with increased TDR, and PCI may have an important role in reducing LVA. Key words: Myocardial Infarction; Cardiac Arrhythmia" @default.
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- W2564261605 date "2016-12-31" @default.
- W2564261605 modified "2023-10-13" @default.
- W2564261605 title "Time Variance of Electrocardiographic Transmural Dispersion in Acute Myocardial Infarction" @default.
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- W2564261605 doi "https://doi.org/10.18501/arrhythmia.2016.030" @default.
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