Thursday, November 14, 2019

Ventricular demand pacing


I came across a patient with VVIR pacing today. I was wondering why we didn't do DDD instead. Let's learn what it is and why (In short!)

VVI - Ventricular demand pacing - ventricle paced, ventricle sensed, and pacemaker inhibited in response to a sensed beat.

Advantages: Ability to protect the patient from dangerous bradycardias.

Disadvantages: Cannot maintain AV synchrony (lack of AV synchrony can result in pacemaker syndrome.)

Indications: Chronic atrial fibrillation with a slow ventricular response.

My patient has chronic atrial fibrillation, that's why :)


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