Hypertrophic cardiomyopathy: Prevalence, pathophysiology, and management of concurrent atrial arrhythmias
- Martin S Maron, MD
Martin S Maron, MD
- Assistant Professor of Medicine
- Tufts University School of Medicine
- Section Editors
- Samuel Lévy, MD
Samuel Lévy, MD
- Section Editor — Cardiac Arrhythmias
- Professor of Cardiology
- University of Marseille, France
- William J McKenna, MD
William J McKenna, MD
- Section Editor — Myopericardial Disease
- Professor of Cardiology
- University College, London
Hypertrophic cardiomyopathy (HCM) is a genetically determined heart muscle disease most often (60 to 70 percent) caused by mutations in one of several sarcomere genes that encode components of the contractile apparatus. (See "Hypertrophic cardiomyopathy: Gene mutations and clinical genetic testing".)
HCM is characterized by left ventricular hypertrophy (LVH) of various morphologies, with a wide array of clinical manifestations and hemodynamic abnormalities (figure 1). Depending in part upon the site and extent of cardiac hypertrophy, patients with HCM can develop one or more of the following abnormalities:
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- PREDISPOSING FACTORS
- CLINICAL MANIFESTATIONS
- Atrial fibrillation
- - Initial management
- - Long-term management
- Rhythm control
- Rate control
- Atrial flutter and other supraventricular tachycardias
- SOCIETY GUIDELINE LINKS
- INFORMATION FOR PATIENTS
- SUMMARY AND RECOMMENDATIONS