This document provides an overview of emergency department nursing, including the skills and roles required, common patient presentations, triage systems, and important considerations for assessment and teamwork. ED nurses must be able to multi-task and make quick, confident decisions while advocating for patients, who may present with issues ranging from minor injuries to massive trauma. Proper assessment involves obtaining a thorough history and considering cultural factors to understand a patient's perspective. Effective teamwork between nurses, doctors, technicians, and interpreters is also essential for providing optimal emergency care.