Background: Premature ventricular complexes are frequent after heart surgery. They are due to an early impulse from the ventricle which may or may not conduct retrograde through the AV node.
AEG: The A-V ratio in PVC’s may demonstrate either more ventricular than atrial signals, or a 1:1 AV ratio depending on PVC timing and retrograde AV nodal conduction. PVCs demonstrate an early ventricular signal with a different appearance than the baseline QRS complex. Frequently, an early ventricular beat may result with no alteration in timing of the atrial signal as shown in the examples above.
Adenosine: Adenosine is not effective for treatment or diagnosis of PVCs.
Atrial Overdrive Pacing: Though atrial overdrive pacing is not recommended for the treatment of PVCs, PVCs may be less common when the heart rate is higher.