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Complete Heart Block in Hypertrophic Cardiomyopathy: A Rare Association.
L Dubey1, S Guruprasad1, R Bhattacharya1
1Department of Cardiology College of Medical Sciences and Teaching Hospital Bharatpur, Nepal.
Bradyarrhythmia, a rare hypertrophic cardiomyopathy complication, can cause syncope and sudden death. This case highlights a young man with hypertrophic cardiomyopathy presenting with syncope and complete heart block, successfully treated with a pacemaker.
Area of Science:
- Cardiology
- Electrophysiology
- Genetic Heart Diseases
Background:
- Hypertrophic cardiomyopathy (HCM) is a primary cardiac disorder.
- Ventricular tachyarrhythmias are common HCM complications, increasing sudden cardiac death risk.
- Bradyarrhythmias, like atrioventricular conduction disturbances, are less common but serious HCM complications.
Purpose of the Study:
- To report a rare case of symptomatic bradyarrhythmia in a young patient with hypertrophic cardiomyopathy.
- To emphasize the importance of considering conduction system disease in HCM patients presenting with syncope.
Main Methods:
- Case report of a 28-year-old male diagnosed with hypertrophic cardiomyopathy.
- Clinical presentation included syncope and complete heart block.
- Diagnostic workup and subsequent management with permanent pacemaker implantation.
Main Results:
- The patient presented with syncope attributed to complete heart block.
- Hypertrophic cardiomyopathy was diagnosed as the underlying condition.
- Permanent pacemaker implantation resolved the bradyarrhythmia and syncope.
Conclusions:
- Symptomatic atrioventricular conduction disturbance can occur in hypertrophic cardiomyopathy.
- Complete heart block is a potential cause of syncope in HCM patients.
- Pacemaker implantation is an effective treatment for symptomatic bradyarrhythmia in HCM.
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