A 49-year-old male patient has been experiencing flu-like symptoms, including fever and chest congestion, for the past four days. He visited the emergency department (ED) last night due to increased difficulty in breathing. The patient has a 20-year history of smoking half a pack of cigarettes per day and has no significant medical or surgical history. The nurse has placed the patient on a cardiorespiratory monitor and administered a nasal cannula. After completing an assessment, the nurse documented the findings in the patient’s chart. Which assessment findings indicate hypoxia?

Choice A rationale A productive cough is not a specific indicator of hypoxia. It could be a symptom of many conditions, including a common cold, flu, or other respiratory tract infections. Choice B rationale A respiratory rate of 28 breaths/minute is higher than the normal range (12-20 breaths/minute for adults), indicating that the patient may be trying to increase oxygen intake and eliminate carbon dioxide due to hypoxia. Choice C rationale An oxygen saturation of 90% on room air is lower than the normal range (95%-100%). This indicates that the patient’s blood is not carrying as much oxygen as it should, which is a sign of hypoxia. Choice D rationale A heart rate of 101 beats/minute is higher than the normal range (60-100 beats/minute for adults). This could be a response to hypoxia as the body tries to deliver more oxygen to the tissues. Choice E rationale A capillary refill of 4 seconds is slightly longer than the normal range (less than 2 seconds). While this could indicate poor peripheral circulation, it is not a specific or direct indicator of hypoxia. Choice F rationale A blood pressure of 145/89 mm Hg is higher than the normal range (less than 120/80 mm Hg). While hypertension could be related to many factors, it is not a specific indicator of hypoxia.