James and Nelson (electrophysiology and cardiology, James Cook U. Hospital, UK) provide medical students and junior doctors with a pocket guide to the electrocardiogram (ECG). They teach the interpretation of ECGs, beginning with anatomy and physiology of the heart, how the ECG is constructed, understanding the normal ECG, and steps for interpretation, then provide clinical examples of real ECGs of major cardiac conditions such as bradyarrhythmias, ectopic beats, atrial arrhythmias, tachyarrhythmias, ischemia and infarction, and inherited arrhythmia problems. Each condition is described in terms of key features, pathophysiology, clinical relevance, and management, with a labeled ECG on the facing page. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)