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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Relation of Testosterone Levels to Mortality in Men With Heart Failure.
American Journal of Cardiology 2018 June 2
We aimed to investigate the impact of testosterone on the prognosis of heart failure (HF), as well as the underlying cardiac function, cardiac damage, and exercise capacity. We analyzed consecutive 618 men with HF (age 65.9 years). These patients were divided into quartiles based on their serum levels of total testosterone (TT): first (TT > 631 ng/dl, n = 154), second (462 < TT ≤ 631 ng/dl, n = 155), third (300 < TT ≤ 462 ng/dl, n = 156), and fourth (TT ≤ 300 ng/dl, n = 153) quartiles. In the Kaplan-Meier analysis (mean 1,281 days), all-cause mortality progressively increased throughout from the first to the fourth groups. In the multivariable Cox proportional hazard analysis, TT was found to be an independent predictor of all-cause mortality (hazard ratio 0.929, p = 0.042). In addition, we compared the parameters of echocardiography and cardiopulmonary exercise testing, as well as levels of B-type natriuretic peptide and cardiac troponin I, among the 4 groups. Left ventricular ejection fraction and B-type natriuretic peptide did not differ among the groups. In contrast, the fourth quartile, compared with the first, second, and third groups, had higher levels of troponin I and lower peak VO2 (p <0.05, respectively). Decreased serum testosterone is associated with myocardial damage, lower exercise capacity, and higher mortality in men with HF.
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