which of the following medications is a serotonin antagonist that might be used to relieve nausea and vomiting
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NCLEX-PN

NCLEX PN 2023 Quizlet

1. Which of the following medications is a serotonin antagonist that might be used to relieve nausea and vomiting?

Correct answer: B

Rationale: Zofran is a serotonin antagonist commonly used to relieve nausea and vomiting by blocking serotonin receptors. Metoclopramide (Reglan) acts on dopamine receptors, hydroxyzine (Vistaril) is an antihistamine, and prochlorperazine (Compazine) is a dopamine antagonist. While these medications can also be used for nausea and vomiting, they do not primarily function as serotonin antagonists like ondansetron.

2. What is the best nursing diagnosis for a client with newly diagnosed Diabetes Mellitus?

Correct answer: B

Rationale: The correct answer is 'Knowledge Deficit: New Diabetes Diagnosis.' Newly diagnosed diabetics require education on their disease, medications, glucose testing, insulin injections, foot care, and sick-day plans. Choices A and D aim to prevent issues that do not currently exist for the client. Choice C, 'Alteration in Nutrition: More than Body Requirements,' is not the priority diagnosis for a newly diagnosed diabetic. While nutritional adjustments may be required for type I or type II diabetes, providing knowledge and education takes precedence at this stage.

3. A nurse reviewed the arterial blood gas reading of a 25-year-old male. The nurse should be able to conclude the patient is experiencing which of the following conditions?

Correct answer: D

Rationale: The correct answer is respiratory alkalosis. In respiratory alkalosis, there is an elevated pH and low carbon dioxide levels (PaCO2 < 35 mmHg). In the given arterial blood gas reading, the patient's pH is 7.41 (within normal range), PaCO2 is 29 mmHg (below normal range), indicating respiratory alkalosis. The bicarbonate level is normal (25 mEq/l), ruling out metabolic acidosis or alkalosis. The low PaO2 (54 mmHg) may indicate hypoxemia, but it is not directly related to the acid-base disorder being assessed. Metabolic acidosis (choice A) is characterized by low pH and low bicarbonate levels, which are not present in this case. Respiratory acidosis (choice B) is indicated by low pH and high PaCO2 levels, which also do not match the provided data. Metabolic alkalosis (choice C) is defined by high pH and high bicarbonate levels, which are not seen in this scenario.

4. A nurse is caring for a patient in the step-down unit. The patient has signs of increased intracranial pressure. Which of the following is not a sign of increased intracranial pressure?

Correct answer: B

Rationale: The correct answer is 'Increased pupil size bilaterally.' When assessing for signs of increased intracranial pressure, bilateral pupil dilation is not typically associated with this condition. Instead, unilateral pupil changes, especially one pupil becoming dilated or non-reactive while the other remains normal, are indicative of increased ICP. Bradycardia, a change in level of consciousness (LOC), and vomiting are commonly seen in patients with increased intracranial pressure due to the brain's response to the rising pressure. Therefore, the presence of bilateral pupil dilation goes against the typical pattern observed in patients with increased intracranial pressure.

5. The client with ulcerative colitis calls the clinic and reports increasing abdominal pain and increased frequency of loose stools. He asks to clarify what type of diet he is to follow. Which diet is best for clients with ulcerative colitis?

Correct answer: D

Rationale: The correct answer is 'Low fiber.' Clients with ulcerative colitis should follow a low-residue diet, which means consuming low fiber to reduce the frequency and volume of stools, helping to alleviate symptoms such as abdominal pain and diarrhea. High fiber diets can worsen the condition by stimulating bowel movements. Choice A, 'High vitamin,' is incorrect as the focus is on fiber content rather than vitamins. Choice B, 'High calorie,' is not specifically recommended for ulcerative colitis and may not address the symptoms effectively. Choice C, 'Low sugar,' does not directly address the dietary needs of clients with ulcerative colitis as the issue is more related to fiber intake than sugar consumption.

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