which oxygen delivery system would the nurse apply that would provide the highest concentrations of oxygen to the client
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Nursing Elites

NCLEX-RN

NCLEX RN Practice Questions Exam Cram

1. Which oxygen delivery system would provide the highest concentrations of oxygen to the client?

Correct answer: C

Rationale: The correct answer is the non-rebreather mask. This oxygen delivery system has a one-way valve that prevents exhaled air from entering the reservoir bag and one or more valves covering the air holes on the face mask itself to prevent the inhalation of room air but allow exhalation of air. When a tight seal is achieved around the mask, up to 100% of oxygen is available. Choice A, the Venturi mask, delivers precise oxygen concentrations but not as high as the non-rebreather mask. Choice B, the partial rebreather mask, allows the client to rebreathe some exhaled air, resulting in lower oxygen concentrations than the non-rebreather mask. Choice D, the simple face mask, delivers low to moderate oxygen concentrations and is not designed to provide the highest concentrations like the non-rebreather mask.

2. In a pediatric clinic, a nurse is assessing a child recently diagnosed with cystic fibrosis. Which of the following later findings of this disease would the nurse not expect to see at this time?

Correct answer: C

Rationale: In a child newly diagnosed with cystic fibrosis (CF), noisy respirations and a dry, non-productive cough are typically the first respiratory signs to appear. The other options, including a positive sweat test, bulky greasy stools, and meconium ileus, are among the earliest findings of CF. CF is a genetic condition that affects the production of mucus, sweat, saliva, and digestive juices. Due to a defective gene, these secretions become thick and sticky instead of thin and slippery, leading to blockages in various passageways, especially in the pancreas and lungs. Respiratory failure is a severe consequence of CF, making it crucial to monitor respiratory symptoms closely in affected individuals. Therefore, a moist, productive cough would not be an expected finding in a newly diagnosed child with CF.

3. A 3-year-old had a hip spica cast applied 2 hours ago. In order to facilitate drying, the nurse should

Correct answer: A

Rationale: After applying a hip spica cast, it is important to facilitate drying by exposing the cast to air and turning the child frequently. This helps promote even drying and prevents complications such as skin breakdown. Using a heat lamp can cause burns and is not recommended. Handling the cast with the abductor bar does not aid in drying the cast. Turning the child as little as possible is incorrect as regular turning is crucial to prevent complications.

4. You have accompanied the physician into the family waiting room to tell a young husband that his wife has not survived the car accident she was in. The husband is crying and distraught. What is the most appropriate approach to supporting this family member?

Correct answer: B

Rationale: The most caring and supportive approach in a time of extreme distress is usually to sit quietly with the distressed individual until they have had the opportunity to absorb the news and gather themselves. Providing a supportive presence is often the most valuable tool a caregiver can use when circumstances bring overwhelming emotional pain to those they are caring for. Asking about organ donation at this moment may come off as insensitive and should not be a priority. Inquiring about funeral arrangements and consulting social services can be addressed later, once the husband has had time to process the initial shock and emotions.

5. A patient diagnosed with alopecia would be described as having:

Correct answer: D

Rationale: The correct answer is 'hair loss.' Alopecia is a medical term that specifically refers to the condition of hair loss, usually in patches or all over the body. Choice A, 'body lice,' refers to a parasitic infestation and is not related to alopecia. Choice B, 'lack of ear lobes,' is completely unrelated to the term alopecia, which is solely about hair loss. Choice C, 'Indigestion,' has no connection to alopecia as it pertains to digestive issues, not hair loss. Therefore, the correct description for a patient diagnosed with alopecia is 'hair loss.'

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