Which respiratory pattern is typical with chest trauma featuring flail chest?

• A. Shallow, rapid respirations, paradoxical chest movement
• B. Deep, slow breaths
• C. Cheyne-Stokes
• D. Kussmaul breathing

Answer: (A)

Flail chest causes chest wall instability, with a free segment of ribs moving independently. The hallmark is paradoxical movement: the fractured segment sucks inward during inspiration when the rest of the chest expands, and bulges outward during expiration. This abnormal motion impairs ventilation and often leads to tachypnea with shallow breaths as the patient tries to maintain gas exchange while limiting pain. So a breathing pattern described as shallow and rapid, along with visible paradoxical chest wall movement, best fits this trauma. Other patterns (like cyclic waxing and waning with apneas, or deep, slow breathing) do not reflect the chest-wall instability and the typical response to chest trauma.