Prematurity of an ectopy is determined by the intrinsic escape rhythm of the ectopic focus ... 2,3. Figure 2: An ECG obtained from a beagle dog 21 days later, showing six rhythm strips ...

No P waves are seen on the ECG. When a junctional escape ensues, the rhythm may be confused with a junctional rhythm. If no junctional escape rhythm is present, a long pause resulting in asystole ...

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular ...