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Cardiology

 

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Pacemaker Indications

 

Class I
* Sinus bradycardia in which symptoms are clearly related to the
bradycardia (usually in patients with a heart rate below 40 beats/min or
frequent sinus pauses).
* Symptomatic chronotropic incompetence.

Class II
* Sinus bradycardia (heart rate <40 beats/min) in a patient with
symptoms suggestive of bradycardia, but without a clearly demonstrated
association between bradycardia and symptoms.
* Sinus node dysfunction in a patient with unexplained syncope.
* Chronic heart rates <40 beats/min while awake in a minimally
symptomatic patient.


 

(Ellen Eaton MD, 7/2/10)