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Primary Blast Injury — FRCA Final MCQ

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ModerateTrauma & Emergency AnaesthesiaPrimary Blast InjuryFRCA Final

Bilateral TM rupture, abdominal distension, hypotension, FAST positive after explosion. Blast injury type causing abdominal injuries?

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Correct answer: A — Primary — pressure wave air-filled organ damage

Primary blast: overpressure wave affects gas-filled organs (lungs, TM, GI tract). TM rupture = marker of blast overpressure exposure. GI blast injuries may be delayed. FAST+ confirms primary blast-induced abdominal injury.

Reference: ATLS – 2018 – Blast injuries; DMS – 2023 – Blast injury guidelines