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Updated: May 22, 2026

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Published on: May 22, 2018

Electro-Mechanical Dissociation in Chagas Cardiomyopathy: Comparative Analysis of Arrhythmic Burden Beyond LVEF

Luis E Echeverría1,2,3, Lyda Z Rojas4, Angie Yarlady Serrano-García1

  • 1Heart Failure and Transplant Unit Fundación Cardiovascular de Colombia Floridablanca Colombia.

Journal of Arrhythmia
|May 21, 2026
PubMed

Insights

Chronic Chagas cardiomyopathy (CCC) patients face high arrhythmia risk, independent of ejection fraction. New markers are needed to predict arrhythmias in CCC, as standard heart failure indicators are insufficient.

Area of Science:

  • Cardiology
  • Medical Research

Background:

  • Chronic Chagas cardiomyopathy (CCC) presents a significant arrhythmic risk.
  • Left ventricular ejection fraction (LVEF) is an insufficient metric for stratifying this risk.

Purpose of the Study:

  • To compare arrhythmic burden in CCC versus ischemic cardiomyopathy (IC).
  • To identify predictors of arrhythmias in CCC patients.

Main Methods:

  • Cross-sectional analysis of 146 heart failure patients (75 CCC, 71 IC).
  • Patients had comparable age, LVEF, and NT-proBNP levels.

Main Results:

  • CCC patients exhibited higher arrhythmic burden and non-sustained ventricular tachycardia (NSVT) prevalence (RR 4.37).
  • NSVT prevalence in CCC was not linked to LVEF.
  • Atrial fibrillation and ventricular aneurysms were primary predictors of NSVT in CCC, unlike in IC.

Conclusions:

  • Arrhythmic risk in CCC is not solely dependent on LVEF.
  • Substrate-based markers are crucial for improving risk stratification in CCC patients.
Abstract

Keywords:
Chagas cardiomyopathynon‐sustained ventricular tachycardiarisk stratificationsudden cardiac deathventricular arrhythmias

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