This quick-reference handbook presents the essential, need-to-know facts on ECG interpretation in an easy-to-scan bulleted format, with anatomical illustrations and hundreds of waveforms in various clinical presentations. The book provides step-by-step instructions on applying electrodes, selecting leads, and performing 12-lead ECGs and offers guidelines for swiftly and accurately interpreting ECGs. All common arrhythmias are graphically illustrated, and a rapid-scan technique for arrhythmia identification is given. Coverage includes drug effects on ECGs and how pacemaker waveforms appear on ECGs. Appendices include a quick guide to arrhythmias, an overview of cardiac drugs, the depolarization-repolarization cycle, action potential curves, the cardiac conduction system, and an arrhythmia chart with best monitoring lead.