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 D
Explanation
Choice A reason: Decreased bowel sounds are not typically associated with diarrhea. Diarrhea usually presents with
increased bowel sounds due to hyperactive gastrointestinal motility.
Choice B reason: A rigid abdomen may suggest an acute abdomen that requires immediate medical attention, not a common finding in uncomplicated cases of diarrhea.
Choice C reason: Hypothermia is not a common finding in diarrhea. Fever may occur if the diarrhea is infectious in
origin.
Choice D reason: Dehydration is a common finding in patients with prolonged diarrhea due to excessive loss of fluids
and electrolytes.
Correct Answer is A
Explanation
Choice A reason: An IV infusion of dextrose 10% in water can cause hyperglycemia, which is an elevated blood sugar
level.
Choice B reason: Hypovolemia, or decreased blood volume, is not a typical adverse effect of dextrose infusion.
Choice C reason: Hypercalcemia, or high calcium levels in the blood, is not associated with dextrose infusion.
Choice D reason: While dextrose infusion can affect electrolyte balance, hypokalemia, or low potassium levels, is not
the primary concern with dextrose infusion.
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