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NurseDive Free Nursing Practice Question
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?
A. Serum potassium level
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.
B. Serum sodium level
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.
C. Serum magnesium level
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.
D. Serum calcium level.
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.
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Full 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
Similar Questions
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?
A. Serum potassium
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.
B. Serum calcium
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.
C. Serum albumin
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.
D. Serum glucose.
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.
Full Explanation
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
A nurse is teaching a client who has heart failure and is prescribed captopril. Which of the following instructions should the nurse include? (Select all that apply.).
A. Avoid salt substitutes that contain potassium.
Captopril can increase the potassium levels in the blood, which can lead to hyperkalemia.Salt substitutes that contain potassium can further increase the risk of hyperkalemia, which can cause cardiac arrhythmias and muscle weakness.
B. Report any dry cough to the provider.
A dry cough is a common side effect of captopril and other ACE inhibitors.It is caused by the accumulation of bradykinin, a substance that dilates blood vessels and causes inflammation in the lungs. The cough can be annoying and interfere with sleep and quality of life.The provider may switch the client to another type of medication if the cough is bothersome.
C. Take the medication on an empty stomach.
Food can decrease the absorption and effectiveness of captopril.The client should take the medication at least 1 hour before or 2 hours after meals.
D. Drink at least 3 L of fluids per day.
Drinking at least 3 L of fluids per day is not recommended for clients with heart failure. Excessive fluid intake can worsen the symptoms of heart failure, such as edema, shortness of breath, and fatigue.The client should limit fluid intake to 2 L or less per day, unless instructed otherwise by the provider.
E. Rise slowly from a sitting or lying position.
Captopril can cause orthostatic hypotension, which is a sudden drop in blood pressure when changing positions. This can lead to dizziness, fainting, and falls.The client should rise slowly and sit on the edge of the bed for a few minutes before standing up..
Full Explanation
Captopril is an angiotensin-converting enzyme (ACE) inhibitor that is used to treat heart failure by lowering blood pressure and reducing the workload on the heart.
The nurse should include the following instructions when teaching a client who is prescribed captopril:
• Avoid salt substitutes that contain potassium. Captopril can increase the potassium levels in the blood, which can lead to hyperkalemia. Salt substitutes that contain potassium can further increase the risk of hyperkalemia, which can cause cardiac arrhythmias and muscle weakness.
• Report any dry cough to the provider. A dry cough is a common side effect of captopril and other ACE inhibitors. It is caused by the accumulation of bradykinin, a substance that dilates blood vessels and causes inflammation in the lungs.
The cough can be annoying and interfere with sleep and quality of life. The provider may switch the client to another type of medication if the cough is bothersome.
• Take the medication on an empty stomach. Food can decrease the absorption and effectiveness of captopril. The client should take the medication at least 1 hour before or 2 hours after meals.
• Rise slowly from a sitting or lying position. Captopril can cause orthostatic hypotension, which is a sudden drop in blood pressure when changing positions.
This can lead to dizziness, fainting, and falls. The client should rise slowly and sit on the edge of the bed for a few minutes before standing up.
Choice D is wrong because drinking at least 3 L of fluids per day is not recommended for clients with heart failure.
Excessive fluid intake can worsen the symptoms of heart failure, such as edema, shortness of breath, and fatigue. The client should limit fluid intake to 2 L or less per day, unless instructed otherwise by the provider.
A nurse is assessing a client who has heart failure and is receiving metoprolol. Which of the following statements by the client indicates a therapeutic effect of the medication?
A. “I have less swelling in my ankles.”
Choice A is wrong because “I have less swelling in my ankles.” This statement indicates a possible effect of a diuretic, which is a medication that reduces fluid retention and edema by increasing urine output. Metoprolol does not have a direct diuretic effect, although it may indirectly reduce fluid accumulation by improving cardiac function.
B. “I can walk farther without getting tired.”
The correct answer is choice B. “I can walk farther without getting tired.” This statement indicates a therapeutic effect of metoprolol, which is a beta-blocker that reduces the heart rate, blood pressure, and the workload of the heart. This helps to improve the blood flow and oxygen delivery to the heart and other organs, and reduces the symptoms of heart failure such as fatigue, dyspnea, and edema.
C. “I don’t have chest pain anymore.”
Choice C is wrong because “I don’t have chest pain anymore.” This statement indicates a possible effect of a nitrate, which is a medication that dilates the blood vessels and reduces the oxygen demand of the heart. Metoprolol may also help to prevent or treat angina by lowering the heart rate and blood pressure, but it is not the primary medication for chest pain relief.
D. “I can breathe better at night.”.
Choice D is wrong because “I can breathe better at night.” This statement indicates a possible effect of an oxygen therapy, which is a treatment that delivers supplemental oxygen to the lungs and improves gas exchange. Metoprolol may also help to reduce dyspnea by improving cardiac function and reducing pulmonary congestion, but it is not the primary treatment for respiratory distress.
Full Explanation
The correct answer is choice B. “I can walk farther without getting tired.” This statement indicates a therapeutic effect of metoprolol, which is a beta-blocker that reduces the heart rate, blood pressure, and the workload of the heart. This helps to improve the blood flow and oxygen delivery to the heart and other organs, and reduces the symptoms of heart failure such as fatigue, dyspnea, and edema.
Choice A is wrong because “I have less swelling in my ankles.” This statement indicates a possible effect of a diuretic, which is a medication that reduces fluid retention and edema by increasing urine output. Metoprolol does not have a direct diuretic effect, although it may indirectly reduce fluid accumulation by improving cardiac function.
Choice C is wrong because “I don’t have chest pain anymore.” This statement indicates a possible effect of a nitrate, which is a medication that dilates the blood vessels and reduces the oxygen demand of the heart. Metoprolol may also help to prevent or treat angina by lowering the heart rate and blood pressure, but it is not the primary medication for chest pain relief.
Choice D is wrong because “I can breathe better at night.” This statement indicates a possible effect of an oxygen therapy, which is a treatment that delivers supplemental oxygen to the lungs and improves gas exchange. Metoprolol may also help to reduce dyspnea by improving cardiac function and reducing pulmonary congestion, but it is not the primary treatment for respiratory distress.