A patient is undergoing oxygen therapy through a nasal cannula.If the patient inquires about the reason for having oxygen tubing in their nose, what explanation about the cannula should the nurse provide?
It allows you to remove it for a while when it gets uncomfortable.
It delivers the low concentration of oxygen you need.
It delivers a specific concentration of oxygen constantly.
It delivers the highest concentration of oxygen possible.
The Correct Answer is B
Choice A rationale
While it’s true that a nasal cannula allows the patient to remove it for a while when it gets uncomfortable, this is not the primary reason for using a nasal cannula. The main purpose of a nasal cannula is to deliver oxygen.
Choice B rationale
A nasal cannula delivers the low concentration of oxygen that the patient needs. It is designed to provide a specific amount of oxygen, and the flow rate can be adjusted as needed.
Choice C rationale
While a nasal cannula does deliver a specific concentration of oxygen, it does not do so constantly. The amount of oxygen delivered can vary depending on the patient’s breathing rate and depth.
Choice D rationale
A nasal cannula does not deliver the highest concentration of oxygen possible. Other devices, such as non-rebreather masks, can deliver higher concentrations of oxygen.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is Choice A. The client is receiving an oxygen concentration of 28%. Nasal cannulas can deliver oxygen at a flow rate ranging from 1 to 6 liters per minute (L/min), with
each additional liter increasing the fraction of inspired oxygen (FiO2) by 4%. Therefore, at 2 L/min, the client is receiving an oxygen concentration of 28%78.
Correct Answer is C
Explanation
Choice A rationale
Mycoplasmal pneumonia, also known as walking pneumonia, is typically not an airborne disease. Standard precautions, including the use of a surgical mask, are usually sufficient when caring for these patients.
Choice B rationale
Scarlet fever is caused by group A Streptococcus bacteria, which are spread through respiratory droplets. Standard precautions, including the use of a surgical mask, are usually sufficient when caring for these patients.
Choice C rationale
Tuberculosis is an airborne disease. Healthcare providers should wear an N95 respirator when caring for a client with tuberculosis to protect themselves from inhaling the bacteria.
Therefore, Choice C is the correct answer.
Choice D rationale
Scabies is caused by a mite and is spread through direct skin-to-skin contact. It is not an airborne disease, so an N95 respirator is not necessary when caring for a client with scabies.
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