What to expect of this book I assume that the reader of this book will have the level of knowledge of the ECG that is contained in The ECG Made Easy, to which this is a companion volume. The ECG is indeed easy in principle, but the variations in pattern seen both in normal people and in patients with cardiac and other problems can make the ECG seem more complex than it really is. This book concentrates on these variations, and contains several examples of each abnormality. It is thus intended for anyone who understands the basics, but now wants to use the ECG to its maximum potential as a.