What are the electrophysiologic (EP) criteria for diagnosis of sinus node dysfunction (SND)?

Updated: Nov 30, 2018
  • Author: Bharat K Kantharia, MD, FRCP, FAHA, FACC, FESC, FHRS; Chief Editor: Mikhael F El-Chami, MD  more...
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Answer

Classic EP criteria for SND include the presence of 1 or more of the following:

  • Corrected SN recovery time (CSNRT) greater than 275 milliseconds (ms)

  • SA conduction time greater than 200 ms

  • SA node arrest

  • SA exit block

  • SN reentry tachycardia


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