Final answer:
The nurse should position the patient in Fowler's position to assist in breathing and administer oxygen as ordered for a client with a wired fractured jaw showing signs of compromised airway and decreased oxygen saturation.
Step-by-step explanation:
When a client with a wired fractured jaw is admitted to the postsurgical unit and exhibits noisy, shallow breathing with an oxygen saturation level now at 90%, the nurse should take appropriate action to ensure the client's airway is open and that they are receiving sufficient oxygen. The recommended approach would be to position the patient in Fowler's position to assist in breathing and administer oxygen as ordered. Considering that the patient's airway might be compromised post-surgery, it is critical to resolve the issue of decreased oxygen saturation. Under no circumstances should the patient be placed in the prone position as it could exacerbate the situation. Care should be taken to monitor the airway, provide supplemental oxygen, and be prepared to suction if necessary to maintain the patent airway and prevent aspiration.