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. When the healthcare provider is determining the appropriate size of an oropharyngeal airway to insert, what part of a client's body should they measure?

Correct answer: A

Rationale: When selecting the correct size of an oropharyngeal airway, the healthcare provider should measure from the corner of the client's mouth to the tragus of the ear. This measurement ensures that the airway is the appropriate length to maintain a clear air passage for exchange. Measuring from the corner of the eye to the top of the ear (Choice B) is inaccurate and not a standard measurement for selecting the size of an oropharyngeal airway. Measuring from the tip of the chin to the sternum (Choice C) is irrelevant to determining the correct size of the airway. Similarly, measuring from the tip of the nose to the earlobe (Choice D) is also incorrect and does not provide the necessary measurement for selecting an oropharyngeal airway size.

3. Which of the following is not an advanced directive?

Correct answer: A

Rationale: Informed consent is the process of obtaining permission from a patient before conducting a healthcare intervention. It is not considered an advanced directive. A living will is a legal document that outlines a person's preferences for medical treatment if they are unable to communicate. A durable power of attorney for health care designates a person to make medical decisions on behalf of the patient. A health care proxy, which is another term for a durable power of attorney for health care, also involves appointing someone to make healthcare decisions for an individual if they become unable to do so. Therefore, the correct answer is 'informed consent,' as it is not an advanced directive but rather a different aspect of patient care.

4. During a hospital program about in vitro fertilization, a television crew arrives to film for a series on hospital services. What action should the nurse conducting the program take?

Correct answer: C

Rationale: Privacy is a client's right to be free from unwanted intrusion into their private affairs. Videotaping constitutes an invasion of a client's privacy, and written permission is required from the client for actions such as photographing or videotaping. Therefore, the nurse must explain to the television crew that videotaping is not allowed to protect the attendees' privacy. Option A is incorrect as it still involves recording the individuals, breaching their privacy. Option B is incorrect because allowing videotaping without consent violates privacy rights. Option D is incorrect as it disregards the need for consent and privacy protection.

5. When the healthcare provider is determining the appropriate size of a nasopharyngeal airway to insert, which body part should be measured on the client?

Correct answer: D

Rationale: A nasopharyngeal airway is measured from the tip of the nose to the earlobe. This measurement ensures that the airway is of the correct length to reach the nasopharynx without being too long or too short. Choices A, B, and C are incorrect as they do not provide the appropriate measurement for selecting the correct size of a nasopharyngeal airway. The distance from the corner of the mouth to the tragus of the ear (Choice A) is used to measure for an oropharyngeal airway, not a nasopharyngeal airway. Similarly, the other choices (B and C) do not correlate with the correct measurement of a nasopharyngeal airway.

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