This document defines trauma and discusses the emergency management of traumatic injuries. It begins by defining trauma as an injury to living tissue caused by external forces. It then outlines the emergency management approach of assessing the ABCDEs - Airway, Breathing, Circulation, Disability, and Exposure. Key interventions discussed include controlling hemorrhage, needle decompression for tension pneumothorax, chest tube insertion, and pelvic stabilization. Complications from trauma like respiratory failure, renal failure, and sepsis are also reviewed. The document provides an overview of the initial evaluation and management of traumatic injuries.