What is the prognosis of sinus bradycardia?

Updated: Dec 27, 2017
  • Author: Mark W Livingston, MD; Chief Editor: Erik D Schraga, MD  more...
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Sequelae of sinus bradycardia are related to its underlying etiology, including the following:

  • In patients who present with toxic exposure, the prognosis is good once the offending agent has been removed.

  • Patients with sick sinus syndrome have a relatively poor prognosis, with 5-year survival rates in the range of 47-69%. However, whether this mortality rate is due to factors intrinsic to the sinus node itself or the concomitant heart disease is unclear.

Patients with sick sinus syndrome may convert to atrial fibrillation, a rhythm that is amenable to medical therapy and may eliminate the need for pacemaker placement.

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