A nurse is caring for a client who has heart failure and is prescribed furosemide. Which of the following laboratory values should the nurse monitor closely?

Serum potassium

Serum calcium

Serum albumin

Serum glucose.

Answer and Explanation

The Correct Answer is A

The nurse should monitor the client’s serum potassium level closely because furosemide is a loop diuretic that can cause hypokalemia, which increases the risk of cardiac arrhythmias and digitalis toxicity. The nurse should also monitor the client’s fluid status, blood pressure, and renal function.

Choice B is wrong because Serum calcium is wrong because furosemide does not affect calcium levels significantly. Calcium levels are more likely to be affected by thiazide diuretics, which can cause hypercalcemia.

Choice C is wrong because Serum albumin is wrong because furosemide does not affect albumin levels significantly. Albumin levels are more likely to be affected by liver disease, malnutrition, or nephrotic syndrome.

Choice D is wrong because Serum glucose is wrong because furosemide does not affect glucose levels significantly. Glucose levels are more likely to be affected by diabetes mellitus, corticosteroids, or stress.

Normal ranges for the laboratory values are:

• Serum potassium: 3.5-5.0 mEq/L

• Serum calcium: 8.5-10.5 mg/dL

• Serum albumin: 3.5-5.0 g/dL

• Serum glucose: 70-110 mg/dL

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Correct Answer is A

Explanation

The nurse should monitor the serum potassium level to determine the therapeutic effectiveness of carvedilol (Coreg), which is a beta-blocker that can lower the heart rate and blood pressure. Carvedilol can also cause hyperkalemia, which is a high level of potassium in the blood that can lead to cardiac arrhythmias and muscle weakness.Therefore, the nurse should monitor the serum potassium level and report any values above 5.0 mEq/L to the provider.

Choice B) Serum sodium level is wrong because carvedilol does not affect the sodium level significantly.Sodium level is more relevant for diuretics, which can cause hyponatremia (low sodium) or hypernatremia (high sodium) depending on the type and dose of the medication.

Choice C) Serum magnesium level is wrong because carvedilol does not affect the magnesium level significantly.

Magnesium level is more relevant for digoxin, which is another medication used for heart failure that can cause hypomagnesemia (low magnesium) or hypermagnesemia (high magnesium).Hypomagnesemia can increase the risk of digoxin toxicity, while hypermagnesemia can decrease the effectiveness of digoxin.

Choice D) Serum calcium level is wrong because carvedilol does not affect the calcium level significantly.

Calcium level is more relevant for calcium channel blockers, which are another class of medications used for heart failure that can lower the heart rate and blood pressure by blocking the entry of calcium into the cardiac and vascular smooth muscle cells.

Calcium channel blockers can cause hypocalcemia (low calcium) or hypercalcemia (high calcium), which can affect the cardiac contractility and conduction.

The normal ranges for serum electrolytes are:

• Potassium: 3.5 to 5.0 mEq/L

• Sodium: 135 to 145 mEq/L

• Magnesium: 1.5 to 2.5 mEq/L

• Calcium: 8.5 to 10.5 mg/dL

A. The client has no edema in the lower extremities. B. The client has a urine output of 30 mL/hr. C. The client has a blood pressure of 120/78 mm Hg. D. The client has a serum creatinine level of 1.2 mg/dL.

Correct Answer is C

Explanation

The client has a blood pressure of 120/78 mm Hg. This indicates that the medication is effective because it lowers the blood pressure below the hypertensive levels.In adults 60 years of age or older, this is typically defined as a systolic pressure below 150 mm Hg and a diastolic pressure below 90 mm Hg.

Choice A is wrong because the client has no edema in the lower extremities. This is not a specific outcome of lisinopril, an angiotensin II receptor blocker (ARB). Edema can be caused by many factors, such as heart failure, kidney disease, or venous insufficiency. Lisinopril does not directly affect fluid retention or edema.

Choice B is wrong because the client has a urine output of 30 mL/hr. This is a low urine output that may indicate dehydration, kidney impairment, or urinary obstruction. Lisinopril is expected to increase urine output by reducing the blood pressure and improving the renal blood flow.

Choice D is wrong because the client has a serum creatinine level of 1.2 mg/dL. This is a high serum creatinine level that may indicate kidney damage or reduced kidney function. Lisinopril is expected to lower the serum creatinine level by preventing the progression of kidney disease and protecting the kidney from further injury.

Normal ranges of urine output, blood pressure, and serum creatinine are:

• Urine output: 800 to 2000 mL/day or 40 to 80 mL/hr

• Blood pressure: less than 120/80 mm Hg for adults

• Serum creatinine: 0.6 to 1.2 mg/dL for males and 0.5 to 1.1 mg/dL for females

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A nurse is caring for a client who has heart failure and is prescribed furosemide. Which of the following laboratory values should the nurse monitor closely?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has heart failure and is receiving carvedilol (Coreg). The nurse should monitor which of the following laboratory values to determine therapeutic effectiveness of this medication?

Correct Answer is A

Explanation

A nurse is evaluating a client who has hypertension and is taking lisinopril, an angiotensin II receptor blocker (ARB). Which of the following outcomes indicates that the medication is effective?

Correct Answer is C

Explanation

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