Risk Stratification of In-Hospital Mortality in Patients Hospitalized for Chronic Congestive Heart Failure Secondary to Non-Ischemic CardiomyopathyChen M.-C. · Chang H.-W. · Cheng C.-I. · Chen Y.-H. · Chai H.-T.
aDivision of Cardiology, Chang Gung Memorial Hospital, Kaohsiung, and bDepartment of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC
The study population consisted of 234 consecutive patients hospitalized for acute exacerbation of congestive heart failure secondary to non-ischemic cardiomyopathy. Of the 234 patients, there were 55 in-hospital deaths. Their medical records were deliberatively reviewed and the association of 38 clinical, hemodynamic and biochemical variables with in-hospital mortality was evaluated by multiple stepwise logistic regression analysis. The following variables were statistically associated with in-hospital mortality: profound cardiogenic shock, severe hyponatremia, the presence of ventricular arrhythmias, history of stroke, the presence of acute renal failure, and requirement of dobutamine therapy. In stratified analyses, the rates of in-hospital mortality rose rapidly as the number of risk factors increased: 0 risk factors, 2.5%; 1 risk factor, 5.1%; 2 risk factors, 36.4%; 3 risk factors, 75%, and no less than 4 risk factors, 100%. In conclusion, our study identified 6 variables that correlated with in-hospital death in patients with heart failure secondary to non-ischemic cardiomyopathy. The identification of these variables may allow more accurate risk stratification of individuals at risk of in-hospital mortality in this clinical setting.
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