which cranial nerve is responsible for the sense of smell
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Nursing Elites

HESI LPN

PN Exit Exam 2023 Quizlet

1. Which cranial nerve is responsible for the sense of smell?

Correct answer: A

Rationale: The olfactory nerve (Cranial Nerve I) is indeed responsible for the sense of smell. It is located in the nasal cavity and transmits olfactory information to the brain. The optic nerve (Choice B) is responsible for vision, the trigeminal nerve (Choice C) is responsible for sensation in the face, and the vagus nerve (Choice D) is responsible for various functions such as heart rate, digestion, and speech. Therefore, the correct answer is the olfactory nerve (Choice A).

2. The PN identifies an electrolyte imbalance, exhibited by changes in mental status, and an elevated blood pressure for a client with progressive heart disease. Which intervention should the PN implement first?

Correct answer: B

Rationale: Evaluating for muscle cramping, which is a sign of electrolyte imbalance, is crucial in this scenario. Electrolyte imbalances, especially involving potassium or calcium, can lead to serious complications such as arrhythmias or seizures, which need immediate attention. Recording eating patterns (choice A) may be important for overall assessment but is not the priority in this situation. Documenting abdominal girth (choice C) and elevating legs on pillows (choice D) are not directly related to addressing the immediate concern of electrolyte imbalance and its potential complications.

3. Before administering an antibiotic that can cause nephrotoxicity, which lab value is most important for the PN to review?

Correct answer: C

Rationale: Serum creatinine is the most important lab value to review before administering an antibiotic that can cause nephrotoxicity. This is because serum creatinine is a key indicator of kidney function. An elevated serum creatinine level may indicate impaired renal function, and administering nephrotoxic drugs in such situations can further damage the kidneys. Monitoring serum creatinine levels helps healthcare providers assess renal function and make informed decisions regarding drug administration. Choices A, B, and D are not as directly related to kidney function and nephrotoxicity, making them less crucial in this scenario. Hemoglobin and hematocrit levels assess for anemia, serum calcium levels are more related to bone health and nerve function, and WBC count is associated with immune response, none of which directly reflect kidney function or the risk of nephrotoxicity.

4. A client is post-operative day two from an abdominal surgery and reports feeling weak and lightheaded when attempting to get out of bed. What is the nurse's priority action?

Correct answer: B

Rationale: The nurse's priority action should be to assist the client back to bed and monitor vital signs. The client's symptoms of feeling weak and lightheaded could indicate potential issues like hypotension or dehydration, which need to be assessed promptly. Encouraging fluids (Choice A) could be beneficial but is not the immediate priority. Administering an antiemetic (Choice C) may not address the underlying cause of the client's symptoms. Notifying the healthcare provider (Choice D) can be done after the client has been stabilized and assessed.

5. A client who had a thyroidectomy 24 hours ago reports tingling around the mouth and in the fingertips. What should the nurse do first?

Correct answer: A

Rationale: Tingling around the mouth and in the fingertips can indicate hypocalcemia, a potential complication after thyroidectomy due to accidental damage to the parathyroid glands. Checking calcium levels is crucial as it helps in diagnosing hypocalcemia accurately. Administering calcium without knowing the actual calcium levels can be dangerous. Assessing the incision site for bleeding is important but not the priority in this situation. Notifying the healthcare provider can be done after assessing and managing the immediate concern of hypocalcemia.

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