Thomas P. Kenny is the primary author of the book, he is the Vice President of Education for St. Jude Medical, a leader in cardiac rhythm management devices. As such, he has developed and collaborated on a wide variety of training and educational materials for physicians, fellows, physician assistants, nurses, and technicians. He is an outstanding presenter with more than 15 years' experience in the electrical management of cardiac rhythms and a thorough understanding of the industry, the key opinion leaders, and its developments over time. He will provide the structure and content of the material. Mr. Kenny has experienced both sides of training for cardiac rhythm management devices: in his early years, in clinical practice, caring for such patients, and today, as an executive charged with training the many people who use St. Jude Medical products. Jo Ann LeQuang has worked with Tom Kenny for over ten years and was most recently Director of Communications at St. Jude Medical. She now owns LeQ Medical Communications based in Angleton, Texas. Jo Ann writes a regular medical column for a local Texas paper, translated Berndt Luderitz's book A History of the Disorders of Cardiac Rhythm (from German into English, 1995), and writes regularly for HMP Publications (medical magazines, newsletters, journals).