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Conduction disturbances in the Kearns-Sayre syndrome
Insights
Kearns-Sayre syndrome, a rare disorder, presents with external ophthalmoplegia, retinitis pigmentosa, and heart block. This case highlights cardiac conduction abnormalities in a patient with this syndrome.
Area of Science:
- Cardiology
- Neurology
- Genetics
Background:
- Kearns-Sayre syndrome (KSS) is a rare mitochondrial disorder.
- KSS is characterized by external ophthalmoplegia, retinitis pigmentosa, and cardiac conduction defects.
Observation:
- A 31-year-old male patient with KSS presented with cardiac symptoms.
- Electrocardiogram showed intermittent left and right bundle branch block with left anterior hemiblock.
- His bundle recording revealed a prolonged HV interval, indicating impaired atrioventricular conduction.
Findings:
- The case demonstrates significant cardiac involvement in KSS.
- Detailed electrophysiological study confirmed conduction system disease.
Implications:
- Early recognition of cardiac manifestations is crucial for managing KSS patients.
- Understanding the spectrum of cardiac involvement can improve patient outcomes and prognosis.
Abstract:
The Kearns-Sayre syndrome is an uncommon disease, characterized by the triad of external ophthalmoplegia, retinitis pigmentosa, and heart block. Cardiac manifestations of this syndrome in a 31-year-old man are presented. Electrocardiogram revealed intermittent left bundle branch block and right bundle branch block with left anterior hemiblock. His bundle recording disclosed a prolonged HV interval. Clinical features of the syndrome are discussed and other published cases reviewed.