This document discusses disaster management and the role of nurses. It defines disasters as events that cause damage, disruption, and human suffering beyond local capabilities. Disasters can be natural or man-made. The document outlines the phases of disaster management including preparedness, impact, response, rehabilitation, and mitigation. It describes the roles of nurses in preparedness such as maintaining records of vulnerable groups, in response such as triage and surveillance, and in recovery including health teaching and psychological support. Overall, the document provides an overview of disaster management and emphasizes the importance of nurses' involvement throughout the entire disaster cycle.