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T-wave alternans (TWA) and mechanical alternans (MA) can be coupled. The goal of this study was to compare outcomes in patents with MA and TWA.A prospective cohort study was conducted in the intensive cardiac care unit and enrolled 133 patients (59.6 ± 15.7 years; 65% men) admitted with acute heart failure (HF). Surface ECG and peripheral arterial blood pressure waveform via arterial line were recorded...
Repolarization lability precedes ventricular arrhythmias. However, in recent competing risk analysis QT variability index predicted non–sudden cardiac death (SCD) but did not predict SCD. Predictive values of other repolarization lability parameters have not been studied in competing risk analysis. We analyzed 3 minutes of baseline resting orthogonal ECGs in sinus rhythm in 533 participants of...
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