What is a definitive management step for severe flail chest?

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Severe flail chest creates a segment of the chest wall that moves paradoxically with breathing, causing poor ventilation and increased work of breathing. The definitive management is providing internal stabilization with mechanical ventilation using positive pressure, typically with PEEP. The applied positive pressure supports the injured chest from inside, limits the abnormal inward motion during inspiration, improves alveolar recruitment, increases tidal volume, and enhances oxygenation and CO2 removal. Analgesics help control pain and enable better shallow breathing, but they don’t correct the mechanical instability. Bed rest isn’t a therapeutic fix for this injury, and broad-spectrum antibiotics are only indicated if there’s an accompanying infection or penetrating wound, not as a primary treatment for the chest wall injury.