Nursing Elites

1. The nurse is administering intravenous fluids to a dehydrated patient. On the second day of care, the patient's weight has increased by 2.25 pounds. The nurse would expect that the patient's fluid intake has

• A. equaled urine output.
• B. exceeded urine output by 1 L.
• C. exceeded urine output by 2.5 L.
• D. exceeded urine output by 3 L.

Correct answer: B

Rationale: A weight gain of 1 kg, or approximately 2.2 to 2.5 lb, is generally equivalent to 1 liter (L) of fluid retained by the body. In this case, the patient's weight gain of 2.25 pounds suggests an excess fluid retention of approximately 1 liter, indicating that the patient's fluid intake has exceeded urine output by 1 liter. Choices C and D are incorrect as they overestimate the fluid excess based on the patient's weight gain. Choice A is incorrect as it implies an exact balance between fluid intake and urine output, which is not reflected in the given weight increase.

2. The patient has a heart rate of 98 beats per minute and a blood pressure of 82/58 mm Hg, is lethargic, complaining of muscle weakness, and has had gastroenteritis for several days. Based on these findings, which sodium value would the nurse expect?

• A. 126 mEq/L
• B. 140 mEq/L
• C. 145 mEq/L
• D. 158 mEq/L

Correct answer: A

Rationale: The patient's presentation of tachycardia, hypotension, lethargy, muscle weakness, and gastroenteritis suggests hyponatremia. Hyponatremia is characterized by a serum sodium level below the normal range of 135-145 mEq/L. A serum sodium level of 126 mEq/L falls significantly below this range, indicating hyponatremia. Choice B (140 mEq/L) and Choice C (145 mEq/L) are within the normal range for serum sodium levels and would not explain the patient's symptoms. Choice D (158 mEq/L) is above the normal range and would indicate hypernatremia, which is not consistent with the patient's presentation.

3. Which of the following medications is typically used to treat asthma?

• A. Aspirin
• B. Metformin
• C. Albuterol
• D. Lisinopril

Correct answer: C

Rationale: The correct answer is C, Albuterol. Albuterol is a bronchodilator commonly used to treat asthma by relaxing the muscles around the airways, helping to relieve symptoms such as coughing, wheezing, shortness of breath, and chest tightness. Aspirin (Choice A) is not typically used to treat asthma and can actually trigger asthma symptoms in some individuals. Metformin (Choice B) is a medication for managing type 2 diabetes and is not indicated for asthma treatment. Lisinopril (Choice D) is an angiotensin-converting enzyme (ACE) inhibitor primarily used to treat high blood pressure and heart failure, not asthma.

4. The nurse is caring for a patient who has had severe vomiting. The patient’s serum sodium level is 130 mEq/L. The nurse will expect the patient’s provider to order which treatment?

• A. Diuretic therapy
• B. Intravenous hypertonic 5% saline
• C. Intravenous normal saline 0.9%
• D. Oral sodium supplements

Correct answer: C

Rationale: In this scenario, the patient has hyponatremia with a serum sodium level of 130 mEq/L. For a serum sodium level between 125 and 135 mEq/L, the appropriate treatment is intravenous normal saline 0.9%. Normal saline helps to increase the sodium content in the vascular fluid. Diuretic therapy would exacerbate sodium and fluid depletion, which is not suitable for a patient already dehydrated from severe vomiting. Intravenous hypertonic 5% saline is typically reserved for severe hyponatremia with a serum sodium level below 120 mEq/L. Oral sodium supplements are not feasible in this case as the patient is vomiting and may not be able to tolerate oral intake easily.

5. The patient is taking hydrochlorothiazide (HydroDIURIL) and digoxin (Lanoxin). Which potential electrolyte imbalance will the nurse monitor for in this patient?

• A. Hypermagnesemia
• B. Hypernatremia
• C. Hypocalcemia
• D. Hypokalemia

Correct answer: D

Rationale: The correct answer is D: Hypokalemia. Thiazide diuretics like hydrochlorothiazide can cause hypokalemia. Hypokalemia enhances the effects of digoxin, leading to digoxin toxicity. Thiazides can also cause hypercalcemia. Choices A, B, and C are incorrect. Hypermagnesemia is not typically associated with hydrochlorothiazide use. Hypernatremia and hypocalcemia are not the primary electrolyte imbalances to monitor for in this scenario.

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