What are the signs and symptoms 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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Most patients with sinus node dysfunction (SND) present with one or more of the following nonspecific symptoms, primarily due to bradycardia, sinus pause, and sinus arrest:

  • Fatigue

  • Lightheadedness

  • Palpitations

  • Presyncope/syncope

  • Dyspnea on exertion

  • Chest discomfort

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