Community Medicine
Disaster Management
Community medicine disaster management for MBBS: disaster classification, the management cycle, mass-casualty triage and the National Disaster Management Authority, mapped to NMC codes CM13.1 to CM13.4.
MedNext Academy | 3 min read
Disaster Management
Community medicine disaster management for MBBS: disaster classification, the management cycle, mass-casualty triage and the National Disaster Management Authority, mapped to NMC codes CM13.1 to CM13.4.
This chapter defines disasters and their classification, then walks through the disaster management cycle from prevention and preparedness to response and rehabilitation. It covers triage, the health consequences of disasters and the institutional framework in India led by the National Disaster Management Authority.
High-yield: Disaster Management
- A disaster is a sudden event causing damage, destruction and human suffering that exceeds the coping capacity of the affected community.
- Disasters are classified as natural, such as earthquakes and floods, and man-made, such as industrial accidents and terrorism.
- The disaster management cycle has phases of prevention, mitigation, preparedness, response, recovery and rehabilitation.
- The pre-disaster phase focuses on prevention, mitigation and preparedness, while the post-disaster phase covers response and recovery.
- Triage sorts casualties by severity so that limited resources save the most lives, often using a colour-coded system.
- In mass-casualty triage, red denotes immediate priority, yellow delayed, green minor and black deceased or expectant.
- The main health effects of disasters include injuries, communicable disease outbreaks, malnutrition and mental trauma.
- Providing safe water, sanitation, food and shelter prevents epidemics in the aftermath of a disaster.
- The National Disaster Management Authority, chaired by the Prime Minister, is the apex body for disaster policy in India.
- The Disaster Management Act of 2005 provides the legal framework for disaster management in the country.
- The National Disaster Response Force is the specialised force for on-ground disaster response.
- Vulnerability and risk assessment guide preparedness planning for different hazards.
- Psychosocial support is an important part of the health response to disasters.
- Early warning systems and community awareness reduce the impact of predictable disasters.
Mass-casualty triage colours
- **Red:** Immediate priority, life-threatening but salvageable injuries needing urgent care.
- **Yellow:** Delayed priority, serious injuries that can wait a short while.
- **Green:** Minor injuries, the walking wounded who can wait longest.
- **Black:** Deceased or injuries incompatible with survival given available resources.
NMC competencies in this chapter
- **CM13.1:** Concept of disaster management
- **CM13.2:** Disaster management cycle
- **CM13.3:** Man-made disasters in the world and in India
- **CM13.4:** National Disaster Management Authority
Frequently Asked Questions
What are the phases of the disaster management cycle?
The cycle runs through prevention, mitigation and preparedness before a disaster, and response, recovery and rehabilitation afterwards, forming a continuous loop that feeds lessons back into future preparedness.
How does triage work in a mass-casualty situation?
Triage rapidly sorts casualties by severity using a colour code so scarce resources save the most lives: red for immediate, yellow for delayed, green for minor and black for the deceased or those beyond help.
What is the role of the National Disaster Management Authority?
It is the apex body for disaster management in India, chaired by the Prime Minister, responsible for laying down policies, plans and guidelines to ensure a timely and effective response to disasters.
Why do communicable diseases increase after disasters?
Disasters disrupt safe water, sanitation, shelter and health services and cause overcrowding in relief camps, which together create ideal conditions for outbreaks of diseases such as cholera, diarrhoea and measles.
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