Which organ is the primary site of blast lung injury and may develop pulmonary contusions?

Which organ is the primary site of blast lung injury and may develop pulmonary contusions?

• A. Lungs
• B. Esophagus
• C. Pancreas
• D. Bones

Answer: (A)

Primary blast injury from an explosion most affects air-filled organs, especially the lungs. The shock wave compresses and rapidly accelerates lung tissue, leading to alveolar rupture, capillary hemorrhage, edema, and pulmonary contusions. The lungs’ air-filled nature makes them the most vulnerable target for this overpressure injury, which is why pulmonary contusions are a classic finding. The other organs listed aren’t the primary site of this overpressure damage—esophagus, pancreas, and bones may be injured in blasts by other mechanisms, but they do not exhibit the characteristic primary blast lung injury pattern.

Primary blast injury from an explosion most affects air-filled organs, especially the lungs. The shock wave compresses and rapidly accelerates lung tissue, leading to alveolar rupture, capillary hemorrhage, edema, and pulmonary contusions. The lungs’ air-filled nature makes them the most vulnerable target for this overpressure injury, which is why pulmonary contusions are a classic finding. The other organs listed aren’t the primary site of this overpressure damage—esophagus, pancreas, and bones may be injured in blasts by other mechanisms, but they do not exhibit the characteristic primary blast lung injury pattern.