Dysrhythmias (or arrhythmias) are abnormal rhythms which may be fast or slow, occasional or frequent. Dysrhythmias are a frequent finding in cardiac disease but are also often secondary to systemic diseases.

In general, the causes and mechanisms of dysrhythmias and their management and treatment differ between those that result from conduction abnormalities (usually bradydysrhythmias) and those due to ectopia (usually tachydysrhythmias).

A basic understanding of electrophysiology and the mechanisms is necessary to understand management and treatment (especially antidysrhythmic drugs).



   BASIC ELECTROPHYSIOLOGY
  DYSRHYTHMIAS
  PERMANENT PACEMAKERS

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