Sinus rhythm with atrial premature complexes ... and emphasizes the need for more extensive education about the appearance of atrial dysrhythmias and artifacts on the electrocardiogram.

sinus depolarization would suppress it 2,3. Figure 2: An ECG obtained from a beagle dog 21 days later, showing six rhythm strips simultaneously (leads I, II, III, aVR, aVL and aVF). VPCs are the ...