Association of Left Ventricular Mass With All-Cause Mortality, Myocardial Infarction and Stroke

PLoS One. 2012;7(9):e45570. doi: 10.1371/journal.pone.0045570. Epub 2012 Sep 26.

Abstract

Background: Our aim was to assess the association of left ventricular mass with mortality and nonfatal cardiovascular events.

Methodology/principal findings: Left ventricular mass was measured by echocardiography in 40138 adult patients (mean age 61.1 ± 16.4 years, 52.5% male). The primary endpoint was all-cause mortality. Secondary endpoints included nonfatal myocardial infarction and nonfatal stroke. During a mean follow-up period of 5.6 ± 3.9 years, 9181 patients died, 901 patients had a nonfatal myocardial infarction, and 2139 patients had a nonfatal stroke. Cumulative 10-year mortality was 26.8%, 31.9%, 37.4% and 46.4% in patients with normal, mildly, moderately and severely increased left ventricular mass, respectively (p<0.001). Ten-year rates of nonfatal myocardial infarction and stroke ranged from 3.2% and 6.7% in patients with normal left ventricular mass to 5.3% and 12.7% in those with severe increase in left ventricular mass, respectively. After multivariate adjustment, left ventricular mass remained an independent predictor of all-cause mortality (hazard ratio [HR] per 100 g increase 1.21, 95% confidence interval [CI] 1.14-1-27, p<0.001 in women, and HR 1.09, 95% CI 1.04-1-13, p<0.001 in men), myocardial infarction (HR 1.60, 95% CI 1.31-1.94, p<0.001 in women and HR 1.15, 95% CI 1.02-1.29, p=0.019 in men) and stroke (HR 1.26, 95% CI 1.13-1.40, p<0.001 in women and HR 1.19, 95% CI 1.09-1.30, p<0.001 in men).

Conclusions/significance: Left ventricular mass has a graded and independent association with all-cause mortality, myocardial infarction and stroke.

MeSH terms

  • Adult
  • Aged
  • Echocardiography
  • Female
  • Heart Ventricles / diagnostic imaging
  • Heart Ventricles / pathology*
  • Humans
  • Hypertrophy, Left Ventricular / complications*
  • Hypertrophy, Left Ventricular / diagnostic imaging
  • Hypertrophy, Left Ventricular / mortality
  • Hypertrophy, Left Ventricular / pathology
  • Male
  • Middle Aged
  • Myocardial Infarction / complications*
  • Myocardial Infarction / diagnostic imaging
  • Myocardial Infarction / mortality
  • Myocardial Infarction / pathology
  • Risk Factors
  • Severity of Illness Index
  • Sex Factors
  • Stroke / complications*
  • Stroke / diagnostic imaging
  • Stroke / mortality
  • Stroke / pathology
  • Survival Analysis

Grant support

No current external funding sources for this study.