Book excerpt: This concise collection of electrophysiological facts prepares you to face the clinical questions surrounding arrhythmia and conduction disorders with confidence. Clear and direct, the book offers: succinct factual information supported by illustrations, tables, and references self-assessment questions for each chapter, to test your knowledge of the area Essential Cardiac Electrophysiology summarizes the fundamental information that forms the basis of the modern approach to cardiac arrhythmias, from an explanation of the electrophysiologic effects of cardiac ion channel activity to the latest information on available implantable defibrillators. All members of the cardiac care team will benefit from keeping this valuable guide close at hand.