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: Cerebral edema is not typically a manifestation of hyperkalemia. Hyperkalemia can cause neurological symptoms due to its effect on nerve transmission, but cerebral edema is more commonly associated with conditions like traumatic brain injury, stroke, or brain tumors.
Choice B reason: Wheezing is a respiratory symptom and is not directly related to hyperkalemia. It is more commonly associated with respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD).
Choice C reason: Hypoactive bowel sounds may indicate a gastrointestinal issue but are not a specific sign of hyperkalemia. Hyperkalemia can affect smooth muscle contraction and could potentially lead to intestinal motility issues, but this is not a primary manifestation.
Choice D reason: Decreased deep tendon reflexes can be a manifestation of hyperkalemia. Hyperkalemia affects the neuromuscular junction and can lead to muscle weakness, which may manifest as decreased reflexes. Normal potassium levels in the blood are typically between 3.5 and 5.0 millimoles per liter (mmol/L). Hyperkalemia occurs when potassium levels rise above 5.5 mmol/L.
Correct Answer is C
Explanation
Choice A reason: Testing the balloon is important, but it is not the action to take immediately before insertion.
Choice B reason: While cleaning the urinary meatus is necessary, using one cotton swab is not sufficient for proper aseptic technique.
Choice C reason: Donning sterile gloves is essential to maintain an aseptic technique during catheter insertion to prevent infection.
Choice D reason: An oil-based lubricant should not be used as it can increase the risk of infection and is not compatible with the catheter material; a water-soluble lubricant is recommended.
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