Plasma aldosterone levels are associated with increased cardiovascular mortality: the Ludwigshafen Risk and Cardiovascular Health (LURIC) study

Abstract

Aims: Evidence has accumulated that elevated aldosterone levels are associated with increased risks of fatal cardiovascular (CV) events. With the present analysis, we aimed at evaluating prospectively whether plasma aldosterone correlates with all-cause and CV disease (CVD) mortality in a large cohort of patients.

Methods and results: Median plasma aldosterone concentration (PAC) was 79.0 (48.0-124.0) pg/mL (normal range: 30-160) in 3153 patients [median age: 63.5 (56.3-70.6) years; 30.1% women] who had undergone coronary angiography. After a median follow-up of 7.7 (7.2-8.5) years, a total of 716 participants died [22.7%; 454 (14.4%) due to CV causes and 262 (8.3%) due to non-CV causes]. In multivariable Cox proportional hazard analysis, adjusted for age, gender, antihypertensive treatment, and established CV risk factors, PAC levels stratified in quartiles were significantly associated with all-cause and CVD mortality. Compared with the reference (first) PAC quartile, hazard ratios (confidence interval 95%) for the fourth, third, and second PAC quartiles were 1.30 (1.02-1.65, P = 0.033), 1.32 (1.04-1.68, P = 0.021), and 1.20 (0.93-1.54, P = 0.155) for total mortality and 1.58 (1.15-2.16, P = 0.004), 1.39 (1.01-1.90, P = 0.041), and 1.63 (1.20-2.20, P = 0.002) for CVD mortality, respectively. Analyses for specific causes of CV death revealed strong associations between PAC levels and higher risk for fatal stroke and sudden cardiac death.

Conclusion: In a large cohort of patients scheduled for coronary angiography, variation in PAC levels within the normal range is associated with increased all-cause and CVD mortality independent of major established CV risk factors.