What is the role of exercise stress testing in the workup 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

Exercise stress testing helps in identifying abnormal sinus node function. A subnormal increase in heart rate after exercise (ie, chronotropic incompetence) can help identify individuals with SND who may benefit from a pacemaker implantation.


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