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Comparison of medications for heart failure finds difference in risk of death

Date:
January 13, 2011
Source:
JAMA and Archives Journals
Summary:
In a comparison of the angiotensin II receptor blockers candesartan and losartan, used by patients with heart failure, candesartan was associated with a lower risk of death at 1 and 5 years, according to a new study.

In a comparison of the angiotensin II receptor blockers (ARBs) candesartan and losartan, used by patients with heart failure, candesartan was associated with a lower risk of death at 1 and 5 years, according to a study in the January 12 issue of JAMA.

Angiotensin II receptor blockers reduce cardiovascular mortality and heart failure (HF) hospitalization in patients with HF with reduced left ventricular ejection fraction (LVEF; a measure of how well the left ventricle of the heart pumps with each contraction). Despite variable effects of different ARBs, they have not been tested head to head, and there are reasons to believe they may differ in efficacy, according to background information in the article. Previous research found that in elderly patients with HF, losartan was associated with higher mortality than other ARBs.

Maria Eklind-Cervenka, M.D., of the Department of Cardiology, South Hospital, Stockholm, and colleagues conducted a study to determine whether candesartan is associated with less all-cause mortality than losartan in patients with HF. The study included analysis of data from an HF registry (the Swedish Heart Failure Registry) of 30,254 patients registered from 62 hospitals and 60 outpatient clinics between 2000 and 2009. A total of 5,139 patients (average age, 74; 39 percent women) were treated with candesartan (n = 2,639) or losartan (n = 2,500).

In overall survival between the 2 groups, the researchers found that one-year survival was 90 percent for patients receiving candesartan and 83 percent for patients receiving losartan, and 5-year survival was 61 percent for patients receiving candesartan and 44 percent for patients receiving losartan. The results persisted in stratified analyses.

The researchers add that there are mechanistic reasons to believe candesartan may be more effective than losartan and that studies of candesartan have been larger and more conclusively positive than studies of losartan.

"In conclusion, our findings suggest that candesartan is associated with less all-cause mortality than losartan. However, clinical decision making should await supportive evidence of this observed association. Ideally, different ARB agents should be tested against each other in randomized controlled trials. It would also be important and perhaps more feasible to confirm our findings in other large HF registries," the authors write.


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. Eklind-Cervenka, L. Benson, U. Dahlstrom, M. Edner, M. Rosenqvist, L. H. Lund. Association of Candesartan vs Losartan With All-Cause Mortality in Patients With Heart Failure. JAMA: The Journal of the American Medical Association, 2011; 305 (2): 175 DOI: 10.1001/jama.2010.1949

Cite This Page:

JAMA and Archives Journals. "Comparison of medications for heart failure finds difference in risk of death." ScienceDaily. ScienceDaily, 13 January 2011. <www.sciencedaily.com/releases/2011/01/110111165009.htm>.
JAMA and Archives Journals. (2011, January 13). Comparison of medications for heart failure finds difference in risk of death. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2011/01/110111165009.htm
JAMA and Archives Journals. "Comparison of medications for heart failure finds difference in risk of death." ScienceDaily. www.sciencedaily.com/releases/2011/01/110111165009.htm (accessed July 31, 2014).

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