Emergency nursing involves caring for patients during critical illnesses or injuries. Emergency nurses conduct assessments, assist with procedures, communicate with EMS, and provide critical care. Florence Nightingale was the first emergency nurse during the Crimean War in 1854. Emergency nursing standards and certification were established in the 1970s-1980s. Emergency nurses are trained to think and act quickly while considering different nursing specialties. They conduct triage to prioritize patients and follow assessment protocols to rapidly identify life-threatening issues. Emergency nurses play a key role in patient management by preparing equipment, assisting with procedures, documenting care, and facilitating transfers. Research in emergency nursing is encouraged by professional organizations.