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[Disorders of heart rhythm in hypertrophic cardiomyopathy]
Insights
Hypertrophic cardiomyopathy patients frequently experience dangerous ventricular arrhythmias, including ventricular tachycardia and extrasystoles. Early detection through ECG monitoring is crucial for timely treatment and improved patient outcomes.
Area of Science:
- Cardiology
- Electrophysiology
Context:
- Hypertrophic cardiomyopathy (HCM) is a complex cardiac condition.
- Cardiac rhythm disorders are common in HCM patients.
Purpose:
- To investigate the incidence of cardiac rhythm disorders in HCM patients.
- To identify potentially malignant arrhythmias using 24-hour Holter monitoring.
Summary:
- 47% of 64 HCM patients exhibited potentially malignant ventricular arrhythmias.
- Ventricular extrasystoles and tachycardia were most common, alongside supraventricular arrhythmias.
- Sinoatrial and atrioventricular blocks were less frequent.
Impact:
- Highlights the high prevalence of arrhythmias in HCM.
- Emphasizes the importance of ECG monitoring for risk stratification.
- Informs early and effective treatment strategies for HCM patients.
Abstract:
In 64 patients with hypertrophic cardiomyopathy 24-hour Holter monitoring of the ECG was made in order to detect the incidence of individual disorders of the cardiac rhythm. The examination revealed a large number of potentially malignant ventricular arrhythmias (47% of the patients). Most frequently polytopic ventricular extrasystoles were involved (31.3%), attacks of ventricular tachycardia (20.3%), less frequently bigeminy was recorded (10.9%) and early extrasystoles type R on T (3.1%). As to other disorders of the cardiac rhythm, paroxysmal supraventricular tachycardia was frequent (34.4%), atrial fibrillation or flutter (9.4%) and more numerous supraventricular extrasystoles (7.8%). Sinoatrial (4.7%) and atrioventricular blocks (7.8%) were relatively rare. Examination of patients with hypertrophic cardiomyopathy is an essential prerequisite for the initiation of early and effective treatment which can exert a favourable effect on the subsequent fate of the patients.