Conduction Disorders
 

Third Degree SA Exit Block

 
 
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Overview

  • In third degree sinoatrial exit block, there is complete failure of transmission to the atria - this is indistinguishable from sinus arrest on ECG.
    • Look For

    • Complete lack of P waves and QRS complexes
    • An escape rhythm may be present
    •  
Last updated on November 15th, 2019
 
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