A nurse is reinforcing teaching with a newly licensed nurse about a nonrebreather mask. Which of the following
instructions should the nurse include?
The reservoir bag on a nonrebreather mask should collapse with exhalation.
A nonrebreather mask dries a patient's mucous membranes.
A nonrebreather mask should fit snugly over a patient's face.
Use a nonrebreather mask to deliver low-flow oxygen
The Correct Answer is C
Choice A reason: The reservoir bag on a nonrebreather mask should not collapse with exhalation. It is designed to maintain a continuous flow of oxygen and reserve a volume of oxygen for the patient to inhale with each breath.
Choice B reason: While high-flow oxygen can dry a patient's mucous membranes, a nonrebreather mask typically has a high oxygen flow rate, and humidification can be used to prevent drying.
Choice C reason: A nonrebreather mask must fit snugly over the patient's face to ensure that the highest concentration of oxygen is delivered and that there is minimal dilution with room air.
Choice D reason: A nonrebreather mask is used to deliver high-flow oxygen, not low-flow. It is designed to provide a high concentration of oxygen, typically around 60% to 90% FiO2.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Infusing 0.9% sodium chloride is not the immediate action to take when a transfusion reaction is suspected. The priority is to stop the transfusion and address the reaction.
Choice B reason: Obtaining a blood sample from the client is necessary to perform laboratory tests to confirm the transfusion reaction and to identify the cause.
Choice C reason: Returning the unit of blood to the blood bank is done after the transfusion has been stopped and the reaction has been addressed. It is important for the blood bank to know about the reaction to investigate the cause.
Choice D reason: Notifying the charge nurse is important, but the first action should be to stop the transfusion and maintain the client's safety. The charge nurse can then assist with the subsequent steps.
Correct Answer is D
Explanation
Choice A reason: Nausea is not a common symptom directly associated with obstructive sleep apnea (OSA).
Choice B reason: Hypotension is not typically a finding in OSA. In fact, OSA can be associated with hypertension due to the effects of recurrent oxygen desaturations and sympathetic nervous system activation.
Choice C reason: Constipation is not a symptom commonly linked to OSA. OSA primarily affects respiratory function
during sleep.
Choice D reason: Morning headaches are a common symptom in individuals with OSA due to disrupted sleep patterns and decreased oxygen levels during apneic episodes.
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