ECG: Atrial Ectopic Beats

An ECG strip shows the presence of atrial ectopic beats, which are heartbeats that occur in addition to a normal heartbeat. Atrial ectopic beats are seen as small spikes (P) in a continuous pattern of larger spikes and waves. A normal ECG strip is shown at the bottom for comparison.

(From D Dubin, Rapid Interpretation of EKGs, 1996, Cover Inc., p. 95, 125; with permission.)