During mass casualty response, which organ's injury is most indicative of blast overpressure affecting the respiratory system?

During mass casualty response, which organ's injury is most indicative of blast overpressure affecting the respiratory system?

• A. Brain
• B. Lungs
• C. Bones
• D. Gallbladder

Answer: (B)

The lungs are most telling because primary blast effects directly hit gas-filled organs. The blast overpressure rapidly compresses and then expands the lungs, causing pulmonary contusion, hemorrhage, edema, and even pneumothorax. These injuries impair oxygen exchange quickly, so lung injury is the clearest indicator that the respiratory system has been affected by the blast. Brain injuries can occur but don’t specifically signal respiratory involvement, bones may fracture, and the gallbladder isn’t related to respiratory trauma. In the field, signs like shortness of breath, chest pain, coughing up blood, decreased breath sounds, or subcutaneous emphysema point to pulmonary injury from a blast and guide urgent airway management and rapid transport.

The lungs are most telling because primary blast effects directly hit gas-filled organs. The blast overpressure rapidly compresses and then expands the lungs, causing pulmonary contusion, hemorrhage, edema, and even pneumothorax. These injuries impair oxygen exchange quickly, so lung injury is the clearest indicator that the respiratory system has been affected by the blast.

Brain injuries can occur but don’t specifically signal respiratory involvement, bones may fracture, and the gallbladder isn’t related to respiratory trauma. In the field, signs like shortness of breath, chest pain, coughing up blood, decreased breath sounds, or subcutaneous emphysema point to pulmonary injury from a blast and guide urgent airway management and rapid transport.