Every year tens of thousands of people including doctors, medical students, paramedics, nurses, nursing students, and others involved in the care and treatment of cardiac patients, get introduced to echocardiography; aka Echo or Ultrasound of the Heart.The principles of echo are founded in physics although the interpretation of the results, e.g. color flow echo, shows that the use of Doppler shift and the direction of blood flow was not fully appreciated by those developing Cardiac Echo. Nonetheless, the principles remain the same and this book will provide you with the basic information you need to know, to understand Cardiac Echo.This book in the series on Echocardiograms is designed for Nurses, Nursing Students and Nurse Practitioners. As a nurse or nursing student, having a fundamental understanding of what an echocardiogram looks like, and what we are looking for as Cardiologists, can be an invaluable tool in our communication with you about the health of the patient.