The document discusses oxygen therapy for hypoxic patients. It defines hypoxia and describes signs and symptoms. Proper techniques for oxygen delivery via nasal cannula or mask are covered. The role of the nurse in assessing need, educating patients, and titrating oxygen levels per physician orders is examined through a case study of a post-op patient. The case study demonstrates how the nurse implemented incentive spirometry, pain management, and oxygen weaning to optimize the patient's recovery.