Which organ is most at risk for barotrauma from explosive overpressure, impacting respiratory function?

Which organ is most at risk for barotrauma from explosive overpressure, impacting respiratory function?

• A. Skin
• B. Stomach
• C. Lungs
• D. Muscles

Answer: (C)

The concept being tested is how rapid pressure changes from an explosive overpressure cause barotrauma, with gas-filled organs being especially vulnerable. The lungs are most at risk because they contain air-filled alveoli that are delicate and easily ruptured when a shock wave drives a sudden, large rise in intra-alveolar pressure. This can lead to air leaking into the interstitium, pleural space (pneumothorax), or mediastinum, severely compromising ventilation and gas exchange. Other tissues like skin, stomach, or muscles can be injured by a blast, but they do not experience the same internal pressure changes that disrupt breathing, so they are less directly involved in respiratory failure from blast overpressure. In short, the lungs’ air-filled structure makes them the most vulnerable to barotrauma and respiratory impairment from a blast.

The concept being tested is how rapid pressure changes from an explosive overpressure cause barotrauma, with gas-filled organs being especially vulnerable. The lungs are most at risk because they contain air-filled alveoli that are delicate and easily ruptured when a shock wave drives a sudden, large rise in intra-alveolar pressure. This can lead to air leaking into the interstitium, pleural space (pneumothorax), or mediastinum, severely compromising ventilation and gas exchange. Other tissues like skin, stomach, or muscles can be injured by a blast, but they do not experience the same internal pressure changes that disrupt breathing, so they are less directly involved in respiratory failure from blast overpressure. In short, the lungs’ air-filled structure makes them the most vulnerable to barotrauma and respiratory impairment from a blast.