VVI pacing
Also written as: VVI — Ventricular paced, Ventricular sensed, Inhibited
A basic pacing mode that stimulates the ventricle when intrinsic ventricular activity is not detected.
Full Definition
VVI pacing is a single-chamber pacing mode described by the NASPE/BPEG generic pacemaker code. The first letter (V) indicates ventricular pacing, the second letter (V) indicates ventricular sensing, and the third letter (I) indicates inhibited response to sensed events. In VVI mode, the pacemaker delivers stimulation to the ventricle only when no intrinsic ventricular activity is sensed within the programmed interval. This mode provides basic bradycardia support but lacks atrioventricular synchrony, making it suitable primarily for patients with chronic atrial fibrillation.
Usage
Usage note: Always use capital letters for pacing mode abbreviations.
In Context
- "The device was programmed to VVI pacing mode at 60 bpm for this patient with permanent atrial fibrillation." — Programming report
- "VVI pacing eliminates competition with intrinsic ventricular rhythms while maintaining backup support." — Technical documentation