This book is designed to be use as a reference guide for students, EMS, CNA, MA, PCT, Nurses, and anyone in the healthcare profession. It is full of formulas, charts, abbreviations, signs and symptoms for the most common emergencies such as Myocardial Infarction, stroke and other helpful data used everyday by clinic, hospitals, and by EMS in the field. This book is a great study tool for those taking the National State Exam. This book is designed for anyone in patient care or for people who want to know about their body how to take care of themselves by preventing disease or how organ functions. It is a lightweight pocket guide full of information written in simple terms and up-to-date data.