the nurse is teaching a client about sleep and gives background information on normal sleep patterns which of the following substances promotes sleep
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Nursing Elites

NCLEX-PN

Nclex Exam Cram Practice Questions

1. The nurse is teaching a client about sleep and gives background information on normal sleep patterns. Which of the following substances promotes sleep?

Correct answer: A

Rationale: Serotonin is a substance found in the body that promotes sleep. It plays a role in the synthesis of a hypnogenic factor that directly induces sleep. Cortisol is a stress hormone that can disrupt sleep patterns. Alcohol can disrupt REM sleep and negatively impact sleep quality. Narcotics, like alcohol, can interfere with sleep architecture and lead to poor quality sleep. Therefore, the correct answer is serotonin as it is associated with promoting sleep, while the other substances listed can have negative effects on sleep patterns.

2. Under what circumstances can an individual receive medical care without giving informed consent?

Correct answer: B

Rationale: An individual may receive medical care without giving informed consent in an emergency, life-or-death situation. This exception allows healthcare providers to provide immediate treatment to save a person's life or prevent serious harm when time is of the essence. Choices A, C, and D are incorrect because in all other situations, informed consent is required. The durable power of attorney for health care should be involved if available, the physician should have a discussion with the client in non-life-threatening situations, and in cases where clients are unable to speak for themselves, their designated representative or responsible party should be involved in the consent process.

3. The nurse acts as an advocate for the nursing profession by performing all of the following activities except:

Correct answer: D

Rationale: The nurse acts as an advocate for the nursing profession by encouraging appropriate persons to become nurses, by being a positive role model and mentor, and by communicating the needs of nurses in the most professional manner possible to those making the laws. Encouraging as many persons as possible to become nurses may not align with the advocacy role, as the focus should be on quality rather than quantity. Choices A, B, and C are activities that align with being an advocate for the nursing profession by promoting political involvement, providing first aid, and precepting newly licensed nurses, respectively.

4. When a drug is listed as Category X and prescribed to women of child-bearing age/capacity, the nurse and the interdisciplinary team should counsel the client that:

Correct answer: B

Rationale: When a drug is categorized as Category X, it signifies that there are significant risks of fetal abnormalities if taken during pregnancy. For this reason, women of child-bearing age/capacity should use reliable forms of birth control to prevent pregnancy while on the medication. This ensures that the client avoids the potential harm to the fetus. Option A is incorrect because pregnancy tests are not unreliable due to the drug, but rather the risk is related to potential harm to the fetus. Option C is incorrect as avoiding the drug only on days of intercourse does not provide sufficient protection against pregnancy. Option D is incorrect as the need for an endocrinologist is not directly related to the use of Category X drugs.

5. An LPN is caring for a primarily bedridden client. Which finding should be of least concern?

Correct answer: D

Rationale: The correct answer is the capillary refill time of 3 seconds on the big toe. A capillary refill time longer than three seconds may indicate inadequate blood flow. Swollen feet, brown discoloration above the ankles, and leg pain are all signs of venous insufficiency to the lower extremities. These findings can suggest circulation issues and require further assessment and intervention. Therefore, they should be of more concern compared to the capillary refill time of 3 seconds on the big toe, which is within the normal range of 2-3 seconds.

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