which of the following medications is a serotonin antagonist that might be used to relieve nausea and vomiting
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Nursing Elites

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. A client is admitted to the floor with vomiting and diarrhea for three days. She is receiving IV fluids at 200cc/hr via pump. A priority action for the nurse would be:

Correct answer: D

Rationale: In this scenario, the correct priority action for the nurse would be monitoring the IV site for infiltration. The client is receiving IV fluids at a rapid rate, making it crucial to ensure that the IV site is intact and not causing any complications like infiltration, which can lead to tissue damage. While frequent lung assessments are important for detecting signs of fluid overload, in this case, ensuring the IV site's integrity takes precedence. Obtaining Intake and Output is relevant but not the priority over monitoring the IV site. Vital signs are essential, but given the situation, the immediate concern is the IV site's condition to prevent complications.

3. A nurse is caring for a client with an elevated cortisol level. The nurse can expect the client to exhibit symptoms of:

Correct answer: C

Rationale: Elevated cortisol levels can lead to sodium and fluid retention and potassium deficit, resulting in urinary deficit. This imbalance in electrolytes and fluid can cause a decrease in urinary output. Choices B, hyperpituitarism, and D, hyperthyroidism, are incorrect as they do not directly relate to the symptoms expected with elevated cortisol levels. Option A, urinary excess, is also incorrect as high cortisol levels typically lead to fluid retention and urinary deficit, not excess.

4. A client is admitted for observation following an unrestrained motor vehicle accident. A bystander stated that he lost consciousness for 1-2 minutes. On admission, the client's Glasgow Coma Scale (GCS) was 14. The GCS is now 12. The nurse should:

Correct answer: D

Rationale: A decrease in the Glasgow Coma Scale (GCS) score from 14 to 12 indicates a significant neurological change in the client's condition. This change can be indicative of a deterioration in the client's neurological status, possibly due to intracranial bleeding or swelling. It is crucial for the nurse to notify the physician immediately to ensure prompt evaluation and intervention. Re-assessing in 15 minutes or stimulating the client with a sternal rub are not appropriate actions in this situation as they do not address the underlying cause of the decrease in GCS. Administering Tylenol with codeine for a headache is also not recommended without further assessment and evaluation of the client's condition.

5. A newborn baby exhibits a reflex that includes hand opening, abducted, and extended extremities following a jarring motion. Which of the following correctly identifies the reflex?

Correct answer: D

Rationale: The Moro reflex, also known as the startle reflex, is the correct answer. This reflex is characterized by the baby's response to a sudden head movement or loud noise, causing them to open their hands, extend their arms, and then bring them back towards their body. The characteristics mentioned in the question - hand opening, abducted, and extended extremities following a jarring motion - align with the Moro reflex. The asymmetrical tonic neck reflex (ATNR) involves the head turning to one side with extension of the same side's arm and leg, not the described characteristics. The grasping reflex involves the baby's response to touch on the palm, causing them to grasp an object. While the Moro reflex is often referred to as the startle reflex due to its response to sudden stimuli, the specific characteristics described in the question match the Moro reflex.

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