Certified Post Anesthesia Nurse (CPAN) Practice Exam 2025 - Free CPAN Practice Questions and Study Guide

In the context of a patient with a known history of allergic reactions who has just emerged from anesthesia in the Post Anesthesia Care Unit (PACU), providing supplemental oxygen is a critical intervention. An allergic reaction can lead to respiratory complications, including airway swelling or bronchospasm, which can compromise oxygenation.

Supplemental oxygen helps to ensure that the patient maintains adequate oxygen levels in the bloodstream. Monitoring the patient's oxygen saturation is essential, especially in those with a history of allergies, as they are at increased risk for respiratory distress.

While assessing vital signs is important for overall patient monitoring, and administering histamine blockers might be indicated if an allergic reaction is suspected, the immediate concern following anesthesia relates to respiratory function. Likewise, while monitoring the surgical site is necessary, it does not address the urgent need for airway protection and adequate oxygenation that a potentially anaphylactic response may pose. Therefore, ensuring that the patient receives supplemental oxygen is the priority intervention in this scenario.