premature electrocardiography complex

Premature complexes are the most most form of arrhythmia, most frequently arising within the ventricles. They arise less frequently from the atria & the AV node.

Specific

competitive atrioventricular (AV) dissociation premature atrial complex (PAC, atrial premature contraction, APC) premature atrioventricular junctional complex (JPC) premature ventricular complex (PVC) or depolarization (PVD), extrasystole

References

Manual of Medical Therapeutics, 28th ed, Ewald & McKenzie (eds), Little, Brown & Co, Boston, 1995, pg 140