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Related Experiment Videos

[Arrhythmia and conduction defects in polymyositis]

C Sainte-Beuve1, J Victor, I Penisson

  • 1Laboratoire de physiologie et d'explorations fonctionnelles, hôpital Jean-Verdier, UFR Bobigny, Bondy.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|September 1, 1994
PubMed
Summary
This summary is machine-generated.

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Cardiac complications of dermatomyositis and polymyositis are often overlooked. This case highlights atrioventricular node heart block as an initial symptom, confirmed by myocardial biopsy, linking it to polymyositis.

Area of Science:

  • Cardiology
  • Neurology
  • Rheumatology

Background:

  • Cardiac involvement in inflammatory myopathies like dermatomyositis and polymyositis is frequently underestimated.
  • Conduction abnormalities can be a primary manifestation of these systemic autoimmune diseases.

Observation:

  • A case is presented where heart block, specifically affecting the atrioventricular node, was the initial presenting symptom.
  • The heart block evolved from paroxysmal to permanent and was accompanied by atrial and ventricular arrhythmias.

Findings:

  • Myocardial biopsy confirmed cardiac disease and established a direct histological link between the atrioventricular nodal conduction defect and polymyositis.
  • The findings underscore the potential for significant cardiac pathology in these neuromuscular disorders.

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Implications:

  • This case emphasizes the need for thorough cardiac evaluation in patients diagnosed with dermatomyositis or polymyositis.
  • Increased awareness can lead to earlier diagnosis and intervention for cardiac complications, potentially improving outcomes.