Conduction Disorders
 

Advanced Second Degree AV Block

 
 
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Overview

  • In advanced or ‘high-grade' second degree heart block, multiple beats are blocked and it is difficult to distinguish between Mobitz type I and II.

    • Look For

    • Two or more consecutive p waves without subsequent QRS complexes
    • May be in a 3:1, 4:1 or higher pattern
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