Prognostic Implication of QRS Variability during Hospitalization in Patients with Acute Decompensated Heart Failure.

In our study, patients who had high QRS variability but normal QRS duration (<120 ms) on their last inpatient ECG (n=25) showed a trend for worse clinical outcome of death or heart transplantation than patients who had low QRS variability and normal QRS duration in their last inpatients ECG (n=110, composite endpoints, 32.0% vs. 20.9%, p=0.234).

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