The PrepOS™- Critical Injury Response Framework (M.A.R.C.H) is a prioritized medical response framework used to address life-threatening conditions in the most critically correct order.
Order of Operations
Treat what kills first. M.A.R.C.H. prioritizes the most immediate threats to life—because in critical moments, sequence is survival.
Continuous Reassessment
This is not a checklist—it’s a cycle. Assess, treat, reassess, and repeat. Conditions change fast, and your response must keep pace.
Application
Built for high-risk, real-world environments—adaptable from tactical settings to civilian emergencies where structured, decisive care saves lives.
The PrepOS™- Critical Injury Response Framework (M.A.R.C.H)
The M.A.R.C.H medical protocol is a systematic, evidence-based mnemonic developed by Tactical Combat Casualty Care (TCCC) and Tactical Emergency Casualty Care (TECC) to prioritize life-saving interventions for trauma patients. It guides responders to treat the most critical, preventable causes of death first:
Massive Hemorrhage
Airway
Respiration
Circulation
Head Injury/Hypothermia/Heat Stroke.
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