A client with flail chest is receiving mechanical ventilation. Which of the following interventions is the priority to ensure adequate ventilation and prevent aspiration?

Flail chest occurs when multiple consecutive ribs are fractured in more than one place, creating a free-floating segment of the chest wall that moves paradoxically during respiration. This injury significantly impairs ventilation and often requires mechanical ventilation for respiratory support and stabilization. Ensuring a secure airway and preventing aspiration are critical priorities in clients with endotracheal intubation. Proper management of the airway cuff is essential to maintain ventilation effectiveness and protect the lower respiratory tract. Rationale: A. Maintaining proper cuff inflation pressure on the endotracheal tube is the priority intervention because it ensures a sealed airway, prevents air leaks, and reduces the risk of aspiration of gastric or oropharyngeal contents. Adequate cuff pressure also supports effective mechanical ventilation by ensuring that delivered tidal volumes reach the lungs without loss. B. Positioning the client in a supine position is not appropriate because it can impair lung expansion and increase the risk of aspiration. In clients with flail chest, semi-Fowler’s position is preferred to improve diaphragmatic excursion and promote better oxygenation while reducing pressure on the chest wall. C. Administering high-flow nasal oxygen is not the priority because the client is already mechanically ventilated. Oxygen delivery alone does not address the structural instability of the chest wall or the need for airway protection. Mechanical ventilation provides more effective respiratory support in flail chest. D. Increasing the tidal volume on the ventilator may be used in some cases of flail chest management, but it is not the immediate priority compared to airway protection. Excessively high tidal volumes can increase the risk of barotrauma or volutrauma. Ensuring airway integrity and preventing aspiration take precedence before adjusting ventilator settings.