Sick sinus syndrome

Etiology

  • Drugs: digitalis, calcium channel blockers, beta-blockers, clonidine, other sympatholytics, amiodarone, other antiarrhythmics
  • Age-related conduction system fibrosis or calcification (Lev's disease)
  • Cardiac infiltrative disease (eg, amyloid, sarcoidosis, hemochromatosis)
  • Chagas' disease

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Last updated: December 1, 2014