Emergency Severity Index

The Emergency Severity Index (ESI) is a tool used in emergency departments to quickly assess and prioritize patients based on the urgency of their condition and the amount of resources they may need. It categorizes patients from Level 1 (most urgent, life-threatening conditions) to Level 5 (least urgent, minor issues). This system helps staff make efficient decisions, ensuring that those who need immediate care are treated promptly, while less urgent cases wait appropriately. The ESI improves patient flow, safety, and resource management in busy emergency settings.