Left ventricular twist during dobutamine stress echocardiography after acute myocardial infarction: association with reverse remodeling

Int J Cardiovasc Imaging. 2014 Feb;30(2):313-22. doi: 10.1007/s10554-013-0351-2. Epub 2013 Dec 19.

Abstract

Left ventricular (LV) twist is emerging as a marker of global LV contractility after acute myocardial infarction (AMI). This study aimed to describe stress-induced changes in LV twist during dobutamine stress echocardiography (DSE) after AMI and investigate their association with LV reverse remodeling at 6 months follow-up. In 82 consecutive first AMI patients (61 ± 12 years, 85 % male) treated with primary percutaneous coronary intervention, DSE was performed at 3 months follow-up. Two-dimensional speckle-tracking-derived apical and basal rotation and LV twist were calculated at rest, low- and peak-dose stages. LV reverse remodeling was defined as ≥10 % decrease in LV end-systolic volume between baseline and 6 months follow-up. Patterns of LV twist response on DSE consisted of either a progressive increase throughout each stage (n = 18), an increase at either low- or peak-dose (n = 53) or no significant increase (n = 11). LV reverse remodeling occurred in 28 (34 %) patients, who showed significantly higher peak-dose LV twist (8.51° vs. 6.69°, p = 0.03) and more frequently progressive LV twist increase from rest to peak-dose (39 vs. 13 %, p < 0.01) compared to patients without reverse remodeling. Furthermore, increase in LV twist from rest to peak-dose was the only independent predictor of LV reverse remodeling at 6 months follow-up (OR 1.3, 95 % CI 1.1-1.5, p = 0.005). Both the pattern of progressive increase in LV twist and the stress-induced increment in LV twist on DSE are significantly associated with LV reverse remodeling at 6 month follow-up after AMI, suggesting its potential use as a novel marker of contractile reserve.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Cardiotonic Agents*
  • Chi-Square Distribution
  • Dobutamine*
  • Echocardiography, Stress / methods*
  • Female
  • Heart Ventricles / diagnostic imaging*
  • Heart Ventricles / pathology
  • Heart Ventricles / physiopathology
  • Humans
  • Linear Models
  • Logistic Models
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Myocardial Contraction*
  • Myocardial Infarction / diagnostic imaging*
  • Myocardial Infarction / pathology
  • Myocardial Infarction / physiopathology
  • Myocardial Infarction / therapy
  • Odds Ratio
  • Percutaneous Coronary Intervention
  • Predictive Value of Tests
  • Retrospective Studies
  • Time Factors
  • Treatment Outcome
  • Ventricular Function, Left*
  • Ventricular Remodeling*

Substances

  • Cardiotonic Agents
  • Dobutamine