During field assessment after a blast, which organ should be prioritized for respiratory evaluation because it is especially vulnerable to pressure waves?

During field assessment after a blast, which organ should be prioritized for respiratory evaluation because it is especially vulnerable to pressure waves?

• A. Lungs
• B. Heart
• C. Brain
• D. Spleen

Answer: (A)

The key idea is that blast overpressure primarily damages gas-filled organs, so evaluating the lungs for respiratory compromise is the first priority after a blast. The lungs are especially vulnerable because the pressure wave travels through the chest and directly affects delicate air-containing tissue. This can cause pulmonary contusion, alveolar hemorrhage, edema, or pneumothorax, all of which can rapidly worsen ventilation and oxygenation. Because breathing status immediately determines survival chances, focusing on the lungs during respiratory assessment makes the most sense. Signs to watch for include rapid or shallow breathing, chest pain, decreased or abnormal breath sounds, wheezing, coughing up blood, or subcutaneous crepitus from a pneumothorax. While injuries to the heart, brain, or spleen can occur, they do not pose the same immediate threat to ventilation as lung injury, so lung assessment is prioritized to protect airway and breathing.

The key idea is that blast overpressure primarily damages gas-filled organs, so evaluating the lungs for respiratory compromise is the first priority after a blast. The lungs are especially vulnerable because the pressure wave travels through the chest and directly affects delicate air-containing tissue. This can cause pulmonary contusion, alveolar hemorrhage, edema, or pneumothorax, all of which can rapidly worsen ventilation and oxygenation. Because breathing status immediately determines survival chances, focusing on the lungs during respiratory assessment makes the most sense.

Signs to watch for include rapid or shallow breathing, chest pain, decreased or abnormal breath sounds, wheezing, coughing up blood, or subcutaneous crepitus from a pneumothorax. While injuries to the heart, brain, or spleen can occur, they do not pose the same immediate threat to ventilation as lung injury, so lung assessment is prioritized to protect airway and breathing.