Using straightforward, easy-to-understand language, this essential resource helps you understand how the heart functions and how to interpret ECGs essential knowledge that will allow you to anticipate the appropriate treatment for each. It provides an overview of the normal conduction pathway of the heart, as well as comprehensive coverage of basic cardiac dysthythmias that highlights what happens in the hearts electrical conduction system to cause the appearance of a dysrhythmia. Coverage of all topics reflects the 2005 emergency cardiovascular care guidelines. Case studies, flashcards, puzzles, and more than 325 practice strips are included to reinforce your understanding of key concepts and encourage you to apply your knowledge.