Mass Casualty Incident Triage Management in a Limited-Capacity Hospital
In a mass casualty incident with 30 traumatized patients and only 15 hospital beds available, priority must be given to life-threatening traumas and states (option B) to maximize survival outcomes.
Understanding Mass Casualty Incident (MCI) Triage
Mass casualty incidents require a systematic approach to patient prioritization when resources are overwhelmed. The key principles include:
- Triage decisions should be guided by the principle of seeking to help the greatest number of people survive the crisis 1
- The standard of care may need to shift from conventional to contingency or crisis standards based on available resources 1
- Field triage decision schemes provide a structured approach to identifying patients requiring immediate life-saving interventions 1
Implementing Effective Triage
Step 1: Initial Assessment and Categorization
- Use a standardized triage system such as the Simple Triage and Rapid Treatment (START) method to quickly categorize patients 2
- Assess vital signs and level of consciousness as primary triage indicators 1
- Categorize patients into four priority levels:
- Red (immediate): Life-threatening but salvageable injuries requiring immediate intervention
- Yellow (delayed): Serious injuries requiring treatment but can wait
- Green (minimal): Walking wounded with minor injuries
- Black (expectant): Dead or injuries incompatible with survival 1
Step 2: Identify Patients Requiring Urgent Surgical Treatment
Prioritize patients with anatomical injuries that indicate severe trauma:
- Penetrating injuries to head, neck, torso, and proximal extremities
- Flail chest
- Two or more proximal long-bone fractures
- Crushed, degloved, or mangled extremities
- Pelvic fractures 1
Create a separate patient flow for those requiring immediate surgical intervention, bypassing standard processing to improve evacuation and treatment times 3
Step 3: Resource Allocation
Allocate critical care resources based on:
- Interventions shown to improve survival without which death is likely
- Interventions not requiring extraordinarily expensive equipment
- Interventions implementable without consuming extensive staff or hospital resources 1
Focus on providing essential critical care interventions:
- Basic mechanical ventilation
- Hemodynamic support
- IV fluid resuscitation and vasopressors
- Antibiotic or other disease-specific countermeasure therapy 1
Step 4: Staff Deployment
- Implement a two-tiered staffing model when critical care needs cannot be met by specialists alone:
- Non-intensivists can manage approximately six critically ill patients each
- Intensivists should coordinate the efforts of up to four non-intensivists
- Non-critical care nurses can be assigned to no more than two critically ill patients 1
Optimizing Patient Distribution
- Distribute patients among available hospitals when possible to prevent overwhelming a single facility 4
- Consider transferring stabilized patients to other facilities to free up beds for more critical cases 1
- Implement a phased evacuation approach:
- First phase: Patients with evident trauma requiring immediate intervention
- Second phase: Patients with less urgent conditions 4
Avoiding Common Pitfalls
- Avoid treating all patients with equal priority (option A): This leads to inefficient resource utilization and potentially preventable deaths 1
- Avoid prioritizing only your specialty cases (option C): This creates inequitable care and fails to address the overall goal of saving the most lives 1
- Avoid undertriage: Missing severely injured patients who need higher-level care can result in preventable deaths 1
- Beware of overtriage: Sending too many non-critical patients to critical care areas can overwhelm limited resources 1
Special Considerations
- Reactive emergency mass critical care may be necessary as a temporizing strategy until additional resources become available 1
- The hospital incident commander should have authority to initiate emergency protocols and should not have direct patient care responsibilities 1
- Regularly reassess patients as their conditions may change, requiring adjustments to triage categories 2
By implementing a structured triage approach that prioritizes life-threatening injuries, you can maximize survival outcomes in this challenging scenario with limited resources.