Nursing Elites

1. A postoperative patient who had surgery for a perforated gastric ulcer has been receiving nasogastric suction for 3 days. The patient now has a serum sodium level of 127 mEq/L (127 mmol/L). Which prescribed therapy should the nurse question?

• A. Infuse 5% dextrose in water at 125 mL/hr.
• B. Administer IV morphine sulfate 4 mg every 2 hours PRN.
• C. Give IV metoclopramide (Reglan) 10 mg every 6 hours PRN for nausea.
• D. Administer 3% saline if serum sodium decreases to less than 128 mEq/L.

Correct answer: A

Rationale: The nurse should question the prescription to infuse 5% dextrose in water at 125 mL/hr because the patient's gastric suction has been depleting electrolytes, leading to hyponatremia. Therefore, the IV solution should include electrolyte replacement. Solutions like lactated Ringer’s solution would usually be ordered. The other choices (B, C, and D) are appropriate for a postoperative patient with gastric suction, addressing pain management, nausea control, and correcting hyponatremia if it drops below a certain level.

2. How should the nurse interpret the following arterial blood gas results for a patient who had a tracheostomy placed after a motor vehicle crash: pH 7.48, PaO2 85 mm Hg, PaCO2 32 mm Hg, and HCO3 25 mEq/L?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Respiratory acidosis
• D. Respiratory alkalosis

Correct answer: D

Rationale: The patient's pH of 7.48 indicates alkalosis, and the low PaCO2 of 32 mm Hg suggests a respiratory cause. The HCO3 level is normal, ruling out metabolic causes. Therefore, the correct interpretation is respiratory alkalosis. Options A, B, and C are incorrect as they do not align with the pH and PaCO2 values provided.

3. A patient who has small cell carcinoma of the lung develops syndrome of inappropriate antidiuretic hormone (SIADH). The nurse should notify the healthcare provider about which assessment finding?

• A. Reported weight gain
• B. Serum hematocrit of 42%
• C. Serum sodium level of 120 mEq/L
• D. Total urinary output of 280 mL during the past 8 hours

Correct answer: C

Rationale: The correct answer is C, a serum sodium level of 120 mEq/L. Hyponatremia is the most important finding to report in SIADH. SIADH causes water retention and a decrease in serum sodium levels. Hyponatremia can lead to confusion and other central nervous system effects and requires treatment. Adequate kidney function is indicated by a urinary output of at least 30 mL/hr. A hematocrit level of 42% is normal. Weight gain is expected due to water retention in SIADH.

4. The nurse is caring for a patient who has a central venous access device (CVAD). Which action by the nurse is appropriate?

• A. Avoid using friction when cleaning around the CVAD insertion site.
• B. Use the push-pause method to flush the CVAD after giving medications.
• C. Obtain an order from the healthcare provider to change the CVAD dressing.
• D. Position the patient’s face away from the CVAD during injection cap changes.

Correct answer: B

Rationale: The correct answer is B because using the push-pause method to flush the CVAD after giving medications helps remove debris from the CVAD lumen and decreases the risk for clotting. Choice A is incorrect because friction should be used when cleaning the CVAD insertion site to decrease infection risk. Choice C is incorrect because obtaining an order from the healthcare provider to change the CVAD dressing is not necessary; the dressing should be changed when damp, loose, or visibly soiled. Choice D is incorrect because the patient should face away from the CVAD during cap changes to minimize the risk of contamination.

5. A patient who has been receiving diuretic therapy is admitted to the emergency department with a serum potassium level of 3.0 mEq/L. The nurse should alert the healthcare provider immediately that the patient is on which medication?

• A. Oral digoxin (Lanoxin) 0.25 mg daily
• B. Ibuprofen (Motrin) 400 mg every 6 hours
• C. Metoprolol (Lopressor) 12.5 mg orally daily
• D. Lantus insulin 24 U subcutaneously every evening

Correct answer: A

Rationale: The correct answer is A. Hypokalemia increases the risk for digoxin toxicity, which can lead to serious dysrhythmias. Therefore, with a low potassium level, the nurse should immediately alert the healthcare provider about the patient being on oral digoxin. Choices B, C, and D do not pose as much concern with the given potassium level. However, further assessment is still required for these medications.

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