common cardiac pacing modes
- related: cardiac pacer
- tags: #permanent
VVI
- ventricular sensing, ventricular pacing, ventricular inhibited
- paces ventricle if no QRS sensed
- safest mode, ensures minimum vent rate
AAI
- atrial sensing, atrial pacing, atrial inhibited
- maintains AV synchrony
- bad if AV node dysfunction
- do not use with mitral valve ring surgery, AV block, afib
DDO
- dual sense, dual pacing, obligatory pacing
- OR operation only
- ignores underlying rhythm
- any bovie can have false positive P QRS interpretation
DDD
- dual sensing, dual pacing, inhibited by any intrinsic activity
- triggers ventricular lead when P wave sensed or paced
DVI
- dual paced, ventricular sensed
- senses QRS, if there is none, then paces both atrial and ventricle
- great when p waves are very small and can't be sensed
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