Shirt Pocket Companion to The Complete Guide to ECGs The ECG Criteria Book provides ECG criteria for 125 ECG diagnoses, including arrhythmias and conduction disturbances; chamber enlargement and hypertrophy; ischemic syndromes; pacemakers; and drug, electrolyte and medical disorders. Also includes sections on approach to ECG interpretation, differential diagnosis of ECG abnormalities, and ACLS algorithms.