Arrhythmia-Induced Cardiomyopathy: JACC State-of-the-Art Review
Pouria Shoureshi1, Alex Y Tan1, Jayanthi Koneru2
1Virginia Commonwealth University/Pauley Heart Center, Richmond, Virginia, USA; Central Virginia Veterans Affair Health Care System, Richmond, Virginia, USA.
Journal of the American College of Cardiology
|May 29, 2024
Summary
Arrhythmia-induced cardiomyopathy (AiCM) is a reversible condition caused by heart rhythm problems. Early diagnosis and treatment of these arrhythmias can restore heart function and improve patient outcomes.
Area of Science:
- Cardiology
- Electrophysiology
- Heart Failure Research
Background:
- Arrhythmias, including tachycardias, atrial fibrillation, and premature ventricular contractions, are common in heart failure.
- These arrhythmias can lead to a reversible form of dilated cardiomyopathy, termed arrhythmia-induced cardiomyopathy (AiCM).
- Individual susceptibility to AiCM despite similar arrhythmia burdens remains an area of investigation.
Purpose of the Study:
- To explore the relationship between arrhythmias and left ventricular dysfunction.
- To identify key indicators for considering AiCM in clinical practice.
- To outline diagnostic and therapeutic strategies for AiCM.
Main Methods:
- Clinical observation and diagnosis of patients with heart failure and arrhythmias.
- Assessment of left ventricular function and response to arrhythmia elimination.
- Evaluation of patient comorbidities and preferences for guiding therapy.
Main Results:
- AiCM is a significant cause of reversible left ventricular dysfunction.
- Specific criteria (mean heart rate >100 bpm, atrial fibrillation, or PVC burden >10%) suggest AiCM.
- Reversal of cardiomyopathy is confirmed by the elimination of the causative arrhythmia.
Conclusions:
- Accurate diagnosis and treatment of AiCM can significantly improve patient quality of life and clinical outcomes.
- Effective management of AiCM can reduce hospital admissions and healthcare costs.
- Ongoing monitoring is crucial for patients with persistent myocardial abnormalities after functional recovery.
Keywords:
arrhythmiacardiomyopathyheart failureleft ventricular dysfunctionpremature ventricular contractionssupraventricular tachycardiaMore Related Videos
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