What is flail chest and how will it present?

What is flail chest and how will it present?

• A. Two or more connected ribs broken with paradoxical movement
• B. Three or more connected ribs broken with paradoxical chest movement
• C. Single rib fracture with localized pain
• D. Rib contusion without fracture

Answer: (B)

Flail chest happens when a segment of the chest wall becomes unstable because multiple adjacent ribs are fractured in such a way that a free-moving portion is created. The hallmark is paradoxical motion: this segment moves inward during inhalation and outward during exhalation, opposite to the rest of the chest. That unusual movement disrupts ventilation of the underlying lung and often goes hand in hand with underlying lung contusion, leading to breathing difficulty and low oxygen levels. The best answer captures the defining picture: three or more connected ribs broken with paradoxical chest movement. That combination describes a sizable flail segment that can move paradoxically with breathing. The other options describe pain from a single rib fracture, a rib contusion without fracture, or a scenario that does not include paradoxical movement, none of which fully define flail chest.

Flail chest happens when a segment of the chest wall becomes unstable because multiple adjacent ribs are fractured in such a way that a free-moving portion is created. The hallmark is paradoxical motion: this segment moves inward during inhalation and outward during exhalation, opposite to the rest of the chest. That unusual movement disrupts ventilation of the underlying lung and often goes hand in hand with underlying lung contusion, leading to breathing difficulty and low oxygen levels.

The best answer captures the defining picture: three or more connected ribs broken with paradoxical chest movement. That combination describes a sizable flail segment that can move paradoxically with breathing. The other options describe pain from a single rib fracture, a rib contusion without fracture, or a scenario that does not include paradoxical movement, none of which fully define flail chest.