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Prolonged electrocardiogram (ECG) QRS duration (≥120 ms) is a risk factor for death in systolic heart failure, but its effects in heart failure with preserved systolic function (HFPSF) have not been extensively studied. We hypothesized that prolonged ECG QRS duration would independently predict long-term mortality in hospitalized HFPSF patients.We analyzed 872 HFPSF patients (defined as left ventricular...
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