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Heart Rate Predicts Mortality in Patients With Heart Failure and Preserved Systolic Function
Heart Rate Predicts Mortality in Patients With Heart Failure and Preserved Systolic Function JOURNAL OF CARDIAC FAILURE Kapoor, J. R., Heidenreich, P. A. 2010; 16 (10): 806-811Abstract
Elevated resting heart rates have been associated with increased mortality and morbidity in patients with heart failure and decreased left ventricular ejection fraction (EF). It is unclear, though, if this association applies to those with heart failure and preserved EF.We determined outcome for 685 consecutive patients with a prior diagnosis of heart failure and a preserved EF (>50%) documented on echocardiography at 1 of 3 laboratories. Patients with non-sinus rhythm were excluded from the analysis. We determined adjusted mortality rates at 1 year after the echocardiogram. The mean age of the cohort was 70 ± 11 years. Of the 685 included patients, 87% had a history of hypertension, 50% had diabetes, and the mean EF was 60% ± 6%. All-cause mortality at 1 year was significantly lower in the group with heart rate below 60 beats/min (10%) when compared with the group with heart rates between 60 and 70 beats/min (18%), 71-90 beats/min (20%), and >90 beats/min (35%) (P < .0001). After adjustment for patient history, demographics, laboratory values, and echocardiographic findings, the hazard ratios for total mortality (relative to a heart rate of <60) were 1.26 (95% CI, 0.88-1.80) for HR 60-69, 1.47 (95% CI, 1.02-2.07) for HR 70-90, and 2.00 (95% CI, 1.31-3.04) for HR>90 (P = .01 across all groups).These data suggest that an elevated resting heart rate is a marker for increased mortality in patients with heart failure and preserved systolic function. Heart rate may be useful in these patients for improved cardiovascular risk assessment.
View details for DOI 10.1016/j.cardfail.2010.04.013
View details for Web of Science ID 000282997500002
View details for PubMedID 20932462