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: Aluminum-containing antacids are more likely to cause constipation rather than diarrhea.
Choice B reason: Magnesium-containing antacids can cause diarrhea because magnesium can act as an osmotic laxative, drawing water into the intestines and increasing peristalsis.
Choice C reason: While antibiotics can disrupt the gut flora and potentially cause diarrhea, they are not the best
answer when compared to magnesium-containing antacids specifically known for this side effect.
Choice D reason: Anticholinergics/antispasmodics typically reduce gastrointestinal motility, which would more likely lead to constipation instead of diarrhea.
Choice E reason: Opioid narcotics are known to cause constipation due to reduced gut motility, not diarrhea
Correct Answer is B
Explanation
Choice A reason: An upper GI series is a series of X-rays used to examine the esophagus, stomach, and small intestine, not the rectum or colon.
Choice B reason: A colonoscopy is the most appropriate test for screening for rectal cancer as it allows for the
examination of the entire colon and rectum and can also facilitate the removal of polyps.
Choice C reason: ERCP is primarily used to diagnose and treat conditions in the liver, gallbladder, bile ducts, and pancreas, not the rectum.
Choice D reason: An upper GI endoscopy, or esophagogastroduodenoscopy (EGD), is used to examine the lining of the upper part of the gastrointestinal tract, which includes the esophagus, stomach, and duodenum, not the rectum.
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