Despite the advancement of new technologies the EKG remains an absolute staple of medical practice and education. Clinicians, residents, and students are eager to review sample tracings, as they know the value of a timely EKG lest and understand the importance of the test to everyday clinical practice. This book was written to assist clinicians, interns, residents, medical students, or anyone in the health care profession who is likely to encounter EKGs in clinical practice. While there are many EKG resources available in print, we continually hear from students and residents that there is room for improvement, and we believe none of these resources arc as detailed nnd user-friendly as Lange llllitani Access: EKGs alld Cardiac Studies. The book includes evidence-based information that is essential in practicing medicine. All the information in the manual was acquired from respected references in the medical literature. This manual is the final product of two and a half years of hard work and was reviewed by some of the most recognized and respected physicians in cardiology and family medicine. We trust that you will find it helpful in your own educational or clinical activities. Lange illstant Access: EKGs alld Cardiac Studies is dedicated to two individuals. One is my grandmother, who inspired me to reach for the slars and nothing less. The second is the someone special to whom my heart will always belong. I would like to thank all of my tcachers and colleagues for their support throughout my years of education and training. Special thanks go out to my best friends, Ray Glover and Pam Gross.