Final answer:
According to the Oxygen Therapy Standard, if pulse oximetry is not functioning or cannot get a reading, patients with altered mental status should receive high concentration oxygen.
Step-by-step explanation:
According to the Oxygen Therapy Standard, if pulse oximetry is not functioning or cannot get a reading, patients with altered mental status should receive high concentration oxygen. Altered mental status refers to a change in a person's mental functioning, such as confusion, disorientation, or difficulty thinking clearly. Providing high concentration oxygen can help improve oxygenation and support brain function in these patients.