Effects of Smoking on Arterial Distensibility, Central Aortic Pressures and Left Ventricular Mass

Int J Cardiol. 2013 Oct 3;168(3):2593-601. doi: 10.1016/j.ijcard.2013.03.045. Epub 2013 Apr 15.

Abstract

Background: The effects of smoking on central aortic pressures and the age-related increase in left ventricular mass (LVM) are largely unknown. We studied the relationship between smoking, arterial distensibility, central aortic pressures and left ventricular mass in two population-based studies.

Methods: Data was obtained from two German population-based studies (KORA and SHIP, participants' ages 25-84 years). We identified 114 normotensive current smokers and 185 normotensive all-time non-smokers in KORA as well as 400 and 588 such individuals in SHIP. Echocardiographic LVM was obtained at baseline (T0) and follow-up after ten years (T1) in KORA and at follow-up (T1) in SHIP. Additionally, pulse-wave analysis-based central aortic pressure and augmentation index (AIx) were measured at T1 in KORA.

Results: Cross-sectional analysis, using KORA T0 and SHIP T1, revealed in both studies a higher covariate-adjusted LVM and left ventricular mass index (LVMI) in smokers as compared with non-smokers. Moreover, in the KORA T1 examination, the smokers demonstrated a more pronounced increase, relative to baseline, of LVM (+13.5%) and LVMI (+13.4%) compared to non-smokers (+8.59% and +8.65%; p=0.036 and 0.042, respectively). Additionally, at KORA T1 smokers had a higher central systolic blood pressure and higher AIx than non-smokers (p=0.012 and p=0.001, respectively).

Conclusions: The difference in central aortic pressure due to enhanced and more prolonged wave reflection may explain our finding of a further pronounced increase in left ventricular wall thickness and mass over time in smokers.

Keywords: Arterial stiffness; Central aortic pressures; Echocardiography; Left ventricular hypertrophy; Population-based study; Smoking.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Arterial Pressure*
  • Arteries / physiopathology*
  • Female
  • Heart Ventricles / pathology*
  • Humans
  • Male
  • Organ Size
  • Prospective Studies
  • Smoking / physiopathology*