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Practical stepwise approach to rhythm disturbances in congenital heart diseases
1Department of Pediatrics, Cardiac and Vascular Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Insights
Congenital heart disease (CHD) patients face lifelong arrhythmia risks due to complex anatomy and acquired factors. Early diagnosis and integrated care, including ablation, are crucial for managing rhythm disturbances.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Cardiac Electrophysiology
Background:
- Congenital heart disease (CHD) patients experience persistent complications like arrhythmias post-correction.
- Rhythm disturbances are a significant cause of morbidity and mortality in this population.
- Factors include intrinsic defects, surgical scarring, hemodynamic changes, and acquired conditions.
Purpose of the Study:
- To outline the evaluation and management of arrhythmias in patients with CHD.
- To highlight the importance of understanding complex cardiac anatomy and predisposing factors.
- To emphasize integrated care involving electrophysiological assessment and hemodynamic correction.
Main Methods:
- Review of predisposing factors for arrhythmias in CHD.
- Stepwise diagnostic approach focusing on anatomy and hemodynamics.
- Discussion of integrated electrophysiological assessment and management strategies.
- Overview of catheter ablation and arrhythmia surgery outcomes.
Main Results:
- Arrhythmias are common in CHD due to multiple factors.
- A structured diagnostic approach aids in identifying causes.
- Integrated care improves management outcomes.
- Interventional procedures like ablation show increasing success.
Conclusions:
- Managing arrhythmias in CHD requires a comprehensive understanding of cardiac defects and hemodynamics.
- Integrated care and advanced interventions are vital for improving patient outcomes.
- Addressing residual hemodynamic abnormalities is key to successful arrhythmia treatment in CHD.
Abstract:
Patients with congenital heart diseases (CHD) are confronted with early- and late-onset complications, such as conduction disorders, arrhythmias, myocardial dysfunction, altered coronary flow, and ischemia, throughout their lifetime despite successful hemodynamic and/or anatomical correction. Rhythm disturbance is a well-known and increasingly frequent cause of morbidity and mortality in patients with CHD. Predisposing factors to rhythm disturbances include underlying cardiac defects, hemodynamic changes as part of the natural history, surgical repair and related scarring, and residual hemodynamic abnormalities. Acquired factors such as aging, hypertension, diabetes, obesity, and others may also contribute to arrhythmogenesis in CHD. The first step in evaluating arrhythmias in CHD is to understand the complex anatomy and to find predisposing factors and hemodynamic abnormalities. A practical stepwise approach can lead to diagnosis and prompt appropriate interventions. Electrophysiological assessment and management should be done with integrated care of the underlying heart defects and hemodynamic abnormalities. Catheter ablation and arrhythmia surgery have been increasingly applied, showing increasing success rates with technological advancement despite complicated arrhythmia circuits in complex anatomy and the difficulty of access. Correction of residual hemodynamic abnormalities may be critical in the treatment of arrhythmia in patients with CHD.
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