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[Hypertropic obstructive cardiomyopathy. A family study]
Insights
This study details eight familial hypertrophic obstructive cardiomyopathy (HOCM) cases, highlighting key symptoms like chest pain and diagnostic findings. Calcium antagonists are now preferred over beta-blockers for HOCM treatment.
Area of Science:
- Cardiology
- Genetics
- Internal Medicine
Context:
- Presents a family with multiple affected individuals, suggesting a genetic component in hypertrophic obstructive cardiomyopathy (HOCM).
- Reviews clinical presentation, diagnostic methods, and therapeutic interventions for HOCM.
Purpose:
- To describe the clinical, diagnostic, and therapeutic aspects of hypertrophic obstructive cardiomyopathy (HOCM) in a familial setting.
- To evaluate the efficacy of diagnostic tools and therapeutic strategies for HOCM.
Summary:
- Eight patients from one family with HOCM exhibited symptoms including chest pain, palpitations, and dyspnea.
- Diagnostic findings included characteristic murmurs, electrocardiographic signs of left ventricular hypertrophy, and echocardiographic abnormalities.
- Cardiac catheterization revealed a left ventricular outflow gradient, and angiography showed systolic obliteration and mitral regurgitation; calcium antagonists are now favored in therapy.
Impact:
- Provides insights into the presentation and management of familial HOCM.
- Suggests a shift in therapeutic preference towards calcium antagonists for HOCM treatment.
Abstract:
Eight patients with HOCM from the same family are presented. The clinical findings and the diagnostic and therapeutic procedures are discussed. Chest pain, palpitations and effort dyspnea were the main clinical symptoms. A characteristic systolic ejection murmur of late onset was present in all the cases. In 6 patients there were electrocardiographic signs of left ventricular hypertrophy and only 4 patients exhibited abnormal septal depolarization. Echocardiography revealed an enhanced diastolic interventricular septal to left ventricular posterior wall ratio (above 1.3), diminished left ventricular septum movement, systolic anterior motion of the mitral valve and mid systolic closure of the aortic valve. Cardiac catheterization showed a left ventricular out-flow gradient which was increased by isoproterenol infusion. In 5 patients the left ventricular angiogram disclosed systolic obliteration of the left ventricle and in 4 cases mitral regurgitation. In the therapy of HOCM, calcium antagonists are now widely used and seem to have replaced betablocking agents.