Pharmacology/Antiarrythmics

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The four classes of anti-arrhythmics include -

  CLASS I (Na channel blockers)
     CLASS IA (K+ channel blockers also)
     CLASS IB (involved in treatment of necrotic tissue)
     CLASS IC
     CLASS ID
  CLASS II (beta-blockers)
  CLASS III (K+ channel blockers)
  CLASS IV (Ca+ channel blockers)