Nursing Elites

1. What is the therapeutic use of Phenytoin?

• A. Replacement in hypothyroidism to restore normal hormonal balance
• B. Diminished accumulation of acid in the gastric lumen with lessened gastroesophageal reflux
• C. Diminished seizure activity, termination of ventricular arrhythmias
• D. Prevention of thrombus formation, prevention of extension of existing thrombi

Correct answer: C

Rationale: Phenytoin is primarily used to diminish seizure activity and is effective in terminating ventricular arrhythmias. It works by stabilizing neuronal membranes, reducing repetitive neuronal firing, and limiting the spread of seizure activity in the brain. While phenytoin does not have a direct role in preventing thrombus formation or extending existing thrombi, it is crucial in managing seizures and certain arrhythmias.

2. A healthcare professional is preparing to initiate IV therapy for an older adult client. Which of the following actions should the professional plan to take?

• A. Use a blood pressure cuff to distend the veins.
• B. Select the antecubital area to insert the IV catheter.
• C. Distend the veins by using a blood pressure cuff.
• D. Direct the client to lower his arm below his heart.

Correct answer: C

Rationale: The correct answer is C. The healthcare professional should distend the veins using a blood pressure cuff to make the veins more visible and accessible for IV catheter insertion. This technique helps reduce the risk of overfilling the vein, which can lead to complications such as hematoma formation. Choices A, B, and D are incorrect because while selecting the antecubital area is often appropriate for IV insertion in adults, the key action in this scenario is to distend the veins using a blood pressure cuff to facilitate the procedure.

3. Which of the following diuretics inhibits sodium reabsorption in the kidneys while sparing K+ and hydrogen ions?

• A. Spironolactone
• B. Furosemide
• C. Hydrochlorothiazide
• D. Bumetanide

Correct answer: A

Rationale: Spironolactone is the correct answer as it is classified as a potassium-sparing diuretic. It works by inhibiting sodium reabsorption in the kidneys while promoting the retention of potassium and hydrogen ions. This mechanism of action helps in reducing fluid retention without causing excessive loss of potassium, which is a common side effect of other diuretics. Furosemide (choice B), Hydrochlorothiazide (choice C), and Bumetanide (choice D) are not correct as they are not potassium-sparing diuretics. Furosemide and Bumetanide are loop diuretics that inhibit sodium, potassium, and chloride reabsorption in the loop of Henle. Hydrochlorothiazide is a thiazide diuretic that inhibits sodium and chloride reabsorption in the distal convoluted tubule, leading to potassium loss.

4. A client has a new prescription for Filgrastim. Which of the following instructions should be included by the healthcare provider?

• A. Take this medication with food.
• B. Avoid taking this medication with orange juice.
• C. Report bone pain to your healthcare provider.
• D. Expect a persistent cough while taking this medication.

Correct answer: C

Rationale: The correct answer is C: 'Report bone pain to your healthcare provider.' Filgrastim is known to cause bone pain as a common side effect. Therefore, it is crucial for clients to report any bone pain to their healthcare provider to monitor for potential complications or the need for further management. Choices A, B, and D are incorrect because taking Filgrastim with food, avoiding it with orange juice, and expecting a persistent cough are not relevant instructions associated with this medication.

5. A healthcare professional is reviewing the medication list of a client who has a new prescription for Metformin to treat type 2 diabetes. Which of the following medications should the healthcare professional identify as placing the client at risk for lactic acidosis?

• A. Metformin
• B. Metoprolol
• C. Lisinopril
• D. Insulin

Correct answer: A

Rationale: Metformin is known to have a risk of causing lactic acidosis, particularly in clients with renal impairment or predisposing conditions. Lactic acidosis is a rare but serious adverse effect of metformin use that can be life-threatening. Metoprolol, Lisinopril, and Insulin do not have a known association with lactic acidosis. Healthcare professionals should monitor clients prescribed metformin carefully, especially those with risk factors, to detect and manage lactic acidosis promptly.

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