What does asymmetrical chest wall movement indicate in blunt trauma?

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Multiple Choice

What does asymmetrical chest wall movement indicate in blunt trauma?

Asymmetrical chest wall movement after blunt trauma signals chest-wall instability from multiple rib fractures, i.e., a flail chest. A free-floating segment moves paradoxically—toward the inside during inspiration and outward during expiration—opposite to the rest of the chest. This paradoxical motion reduces the affected lung’s ventilation, increases the work of breathing, and can lead to hypoxemia and respiratory distress, often with accompanying pulmonary contusion. So this sign points to a flail chest with respiratory compromise, rather than normal movement, no injury relevance, or no clinical significance.

Asymmetrical chest wall movement after blunt trauma signals chest-wall instability from multiple rib fractures, i.e., a flail chest. A free-floating segment moves paradoxically—toward the inside during inspiration and outward during expiration—opposite to the rest of the chest. This paradoxical motion reduces the affected lung’s ventilation, increases the work of breathing, and can lead to hypoxemia and respiratory distress, often with accompanying pulmonary contusion. So this sign points to a flail chest with respiratory compromise, rather than normal movement, no injury relevance, or no clinical significance.

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