A nurse is caring for a client who is receiving oxygen therapy via a nasal cannula. How should the nurse explain to the client how this method of oxygen delivery performs?
Delivers a low concentration of oxygen.
Delivers a constant rate of oxygen.
Delivers a high concentration of oxygen.
Delivers a constant flow of a specific concentration of oxygen.
The Correct Answer is D
Choice A Reason:
“Delivers a low concentration of oxygen” is incorrect because a nasal cannula can deliver varying concentrations of oxygen depending on the flow rate set by the healthcare provider. The concentration can range from low to moderate, typically between 24% to 44%.
Choice B Reason:
“Delivers a constant rate of oxygen” is partially correct but not entirely accurate. While the flow rate can be constant, the key aspect is the specific concentration of oxygen delivered, which is more relevant to the client’s understanding.
Choice C Reason:
“Delivers a high concentration of oxygen” is incorrect because nasal cannulas are generally used for low to moderate oxygen delivery. High concentrations of oxygen are typically delivered through other devices like non-rebreather masks or high-flow nasal cannulas.
Choice D Reason:
“Delivers a constant flow of a specific concentration of oxygen” is correct. This explanation accurately describes how a nasal cannula works. It provides a continuous flow of oxygen at a specific concentration, which is adjusted based on the client’s needs and the healthcare provider’s prescription.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
“Do not take the medication before bedtime” is incorrect because the timing of medication administration depends on the specific medication and its intended effects. Some medications are specifically prescribed to be taken at bedtime to help with sleep or to reduce side effects that might occur during the day.
Choice B Reason:
“Take the medication with a full glass of water” is correct because many medications require adequate hydration to ensure proper absorption and to prevent irritation of the esophagus and stomach. Taking medication with a full glass of water helps to ensure that the medication reaches the stomach quickly and reduces the risk of esophageal irritation or damage.
Choice C Reason:
“This medication must be taken on an empty stomach” is incorrect unless the specific medication requires it. Some medications are better absorbed on an empty stomach, but this is not a universal rule and depends on the medication’s formulation and intended use.
Choice D Reason:
“Expect abdominal pain with this medication” is incorrect because not all medications cause abdominal pain. If a medication is known to cause abdominal pain, the nurse should provide additional instructions on how to manage this side effect or discuss alternative medications with the healthcare provider.
Correct Answer is D
Explanation
Choice A Reason:
“Call the provider” is important but not the first priority. The immediate concern is to maintain the client’s intravenous access to ensure they can receive any necessary medications or fluids promptly. Once the line is secured, the provider should be notified to receive further instructions and manage the client’s condition.
Choice B Reason:
“Notify the blood bank” is also crucial but comes after ensuring the client’s immediate safety. The blood bank needs to be informed to investigate the cause of the reaction and prevent further issues, but this step follows the initial emergency interventions.
Choice C Reason:
“Collect a urine specimen” is necessary to check for hemolysis, which can occur during a transfusion reaction. However, this is not the first step. The priority is to stabilize the client by maintaining IV access with normal saline.
Choice D Reason:
“Keep the line open with 0.9% NS through new tubing” is the correct first intervention. This action ensures that the client remains hydrated and that the IV line is available for any emergency medications or treatments. Using new tubing prevents any contamination from the transfusion set.
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