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 A
Explanation
Choice A reason: Ground beef is often included in a soft diet as it can be cooked to a tender consistency that is easy
to chew and swallow.
Choice B reason: Raw vegetables are generally not included in a soft diet because they can be difficult to chew and may pose a risk for individuals with certain digestive or dental issues.
Choice C reason: Fruit with the skin is typically not recommended for a soft diet as the skin can be tough and fibrous,
making it harder to chew and digest.
Choice D reason: High-fiber cereals are usually avoided in a soft diet because they may contain whole grains or nuts
that are hard and could be challenging to chew.
Correct Answer is B
Explanation
Answer: B
Rationale:
A. "You should expect your stoma to be a purple color": A healthy stoma should be pink or red in color. A purple or dark-colored stoma may indicate poor blood flow and could be a sign of complications requiring immediate medical attention.
B. "You will have a stoma in your left lower abdomen": For a sigmoid colostomy, the stoma is typically located in the left lower quadrant of the abdomen. This placement is consistent with the nature of the procedure and is a correct and important piece of information for preoperative teaching.
C. "Your colostomy will not produce formed stool": A sigmoid colostomy usually results in the production of more formed stool because it is located closer to the rectum, where most of the water has been absorbed. Expecting unformed stool is more typical of a colostomy in the ascending or transverse colon.
D. "The end of the stoma will be painful after this procedure": While some discomfort is normal postoperatively, the stoma itself should not be persistently painful. Pain management and proper care should be addressed, but ongoing severe pain could indicate complications.
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