Figure 1: (a) 12-lead electrocardiogram showing heart rate of 38 bpm with the absence of P waves suggesting junctional rhythm (b) 12-lead electrocardiogram with heart rate of 74 bpm with irregular RR intervals and fibrillatory P waves suggestive of atrial fibrillation with controlled ventricular rate (c) 12-lead electrocardiogram with heart rate of 44 bpm with atrioventricular dissociation suggestive of complete heart block