Nursing Elites

1. An older patient receiving iso-osmolar continuous tube feedings develops restlessness, agitation, and weakness. Which laboratory result should the nurse report to the health care provider immediately?

• A. K+ 3.4 mEq/L (3.4 mmol/L)
• B. Ca+2 7.8 mg/dL (1.95 mmol/L)
• C. Na+ 154 mEq/L (154 mmol/L)
• D. PO4-3 4.8 mg/dL (1.55 mmol/L)

Correct answer: C

Rationale: The correct answer is C. The elevated serum sodium level (154 mEq/L) is consistent with the patient's neurologic symptoms of restlessness, agitation, and weakness, indicating a need for immediate action to prevent complications like seizures. The potassium level (3.4 mEq/L) and calcium level (7.8 mg/dL) are slightly off from normal but do not require immediate action. The phosphate level (4.8 mg/dL) is normal and not related to the symptoms presented by the patient.

2. A nurse is assessing a newly admitted patient with chronic heart failure who forgot to take prescribed medications and seems confused. The patient complains of "just blowing up" and has peripheral edema and shortness of breath. Which assessment should the nurse complete first?

• A. Skin turgor
• B. Heart sounds
• C. Mental status
• D. Capillary refill

Correct answer: C

Rationale: Increases in extracellular fluid (ECF) can lead to swelling of cells in the central nervous system, initially causing confusion, which may progress to coma or seizures. Although skin turgor, capillary refill, and heart sounds also may be affected by increases in ECF, these are signs that do not have as immediate impact on patient outcomes as cerebral edema.

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 notes a serum calcium level of 7.9 mg/dL for a patient who has chronic malnutrition. Which action should the nurse take next?

• A. Monitor ionized calcium level.
• B. Give oral calcium citrate tablets.
• C. Check parathyroid hormone level.
• D. Administer vitamin D supplements.

Correct answer: A

Rationale: This patient with chronic malnutrition is likely to have a low serum albumin level, which will affect the total serum calcium. A more accurate reflection of calcium balance is the ionized calcium level. Most of the calcium in the blood is bound to protein (primarily albumin). Alterations in serum albumin levels affect the interpretation of total calcium levels. Low albumin levels result in a drop in the total calcium level, although the level of ionized calcium is not affected. The nurse should monitor the ionized calcium level to get a clearer picture of the patient's calcium status. Giving oral calcium citrate tablets, checking parathyroid hormone level, or administering vitamin D supplements may be necessary based on the ionized calcium results, but they are not the immediate next step in assessment and management.

5. IV potassium chloride (KCl) 60 mEq is prescribed for the treatment of a patient with severe hypokalemia. Which action should the nurse take?

• A. Administer the KCl as a rapid IV bolus.
• B. Infuse the KCl at a rate of 10 mEq/hour.
• C. Only give the KCl through a central venous line.
• D. Discontinue cardiac monitoring during the infusion.

Correct answer: B

Rationale: The correct action for the nurse to take is to infuse the KCl at a rate of 10 mEq/hour. Rapid IV infusion of KCl can lead to cardiac arrest due to its potential for causing hyperkalemia. While KCl can be administered through peripheral veins, central venous lines are not necessary unless specified. It is crucial to continue cardiac monitoring during potassium infusion to promptly identify and manage any potential dysrhythmias that may occur.

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