This ectopic focus becomes the predominant pacemaker ... Brief atrial tachycardia is seen very commonly on ambulatory ECG monitoring in the elderly and is frequently asymptomatic.

ECG plays an important role in detection of several ... higher automaticity – ectopic beats; and re-entry – atrial tachyarrhythmia; and higher vulnerability to arrhythmia – heart rate ...

The ECG will show a premature, ectopic P wave occuring and then no QRS complex afterwards. When this occurs in a pattern of bigeminy, the interpreter may be fooled into thinking that sinus ...

Prematurity of an ectopy is determined by the intrinsic escape rhythm of the ectopic focus ... Figure 2: An ECG obtained from a beagle dog 21 days later, showing six rhythm strips simultaneously ...