TY - JOUR
T1 - Racial differences in the outcomes of patients with diastolic heart failure
AU - East, Mark A.
AU - Peterson, Eric D.
AU - Shaw, Linda K.
AU - Gattis, Wendy A.
AU - O'Connor, Christopher M.
N1 - Funding Information:
Supported in part by a grant from the Association for Black Cardiologists.
PY - 2004/7
Y1 - 2004/7
N2 - Background More than half of all patients with congestive heart failure have preserved left ventricular systolic function. This is particularly common in African American patients, yet there have been few studies examining the long-term natural history of this disorder in African-American and white patients. Methods We studied 2740 white and 563 African American patients with class II to IV symptoms and preserved systolic function (ejection fraction >40) identified in the Duke Cardiovascular Databank from 1984 to1996. Unadjusted and adjusted 5-year survival rate comparisons were performed with Kaplan-Meier and Cox proportional hazards models, respectively. Results The 5-year survival rates were 68% for African American patients and 70% for white patients (P = .55). However, after adjusting for known risk factors, African American patients had a significantly higher mortality risk than white patients (hazard ratio [HR], 1.34; 95% CI, 1.13-1.60). This racial difference in survival rate was most prominent in patients with a non-ischemic etiology (HR, 1.6; 95% CI, 1.2-2.0) as compared with patients with ischemic heart failure (HR, 1.1; 95% CI, 0.9-1.4). Conclusion Among patients with heart failure and preserved left ventricular systolic function, African American patients have a worse long-term prognosis than white patients. These results are important because of the prevalence of this condition in African American patients and their potential heterogeneous response to many heart failure therapies.
AB - Background More than half of all patients with congestive heart failure have preserved left ventricular systolic function. This is particularly common in African American patients, yet there have been few studies examining the long-term natural history of this disorder in African-American and white patients. Methods We studied 2740 white and 563 African American patients with class II to IV symptoms and preserved systolic function (ejection fraction >40) identified in the Duke Cardiovascular Databank from 1984 to1996. Unadjusted and adjusted 5-year survival rate comparisons were performed with Kaplan-Meier and Cox proportional hazards models, respectively. Results The 5-year survival rates were 68% for African American patients and 70% for white patients (P = .55). However, after adjusting for known risk factors, African American patients had a significantly higher mortality risk than white patients (hazard ratio [HR], 1.34; 95% CI, 1.13-1.60). This racial difference in survival rate was most prominent in patients with a non-ischemic etiology (HR, 1.6; 95% CI, 1.2-2.0) as compared with patients with ischemic heart failure (HR, 1.1; 95% CI, 0.9-1.4). Conclusion Among patients with heart failure and preserved left ventricular systolic function, African American patients have a worse long-term prognosis than white patients. These results are important because of the prevalence of this condition in African American patients and their potential heterogeneous response to many heart failure therapies.
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U2 - 10.1016/j.ahj.2004.01.017
DO - 10.1016/j.ahj.2004.01.017
M3 - Article
C2 - 15215805
AN - SCOPUS:3142654130
SN - 0002-8703
VL - 148
SP - 151
EP - 156
JO - American heart journal
JF - American heart journal
IS - 1
ER -