which lab value should be monitored in patients receiving furosemide

ATI RN

ATI RN Exit Exam

1. Which lab value should be monitored in patients receiving furosemide?

A. Monitor potassium levels
B. Monitor sodium levels
C. Monitor calcium levels
D. Monitor glucose levels

Correct answer: A

Rationale: The correct answer is to monitor potassium levels in patients receiving furosemide. Furosemide is a loop diuretic that can lead to potassium loss in the urine, potentially causing hypokalemia. Monitoring potassium levels is crucial to prevent complications associated with low potassium levels, such as cardiac arrhythmias. Monitoring sodium levels (choice B) is not typically necessary with furosemide use, as it primarily affects potassium levels. Calcium levels (choice C) and glucose levels (choice D) are not directly impacted by furosemide and require monitoring for other conditions or medications.

2. A nurse is caring for a client who is receiving a continuous heparin infusion. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the therapy?

A. Serum potassium
B. Platelets
C. aPTT
D. INR

Correct answer: C

Rationale: The correct answer is C: aPTT. Monitoring the activated partial thromboplastin time (aPTT) is crucial when a client is receiving heparin therapy. The aPTT reflects the clotting time and helps assess the effectiveness of heparin in preventing clot formation. Keeping the aPTT within the therapeutic range ensures that the medication is working optimally. Choices A, B, and D are incorrect because serum potassium, platelets, and INR are not direct indicators of heparin's effectiveness or therapeutic range.

3. A nurse is assessing a client who has a deep vein thrombosis (DVT). Which of the following findings should the nurse report to the provider?

A. Calf tenderness.
B. Shortness of breath.
C. Elevated blood pressure.
D. Respiratory rate of 18/min.

Correct answer: B

Rationale: Shortness of breath is a critical finding that can indicate a pulmonary embolism, a severe complication of DVT. This symptom suggests a potential life-threatening situation and requires immediate intervention. Calf tenderness, while common in DVT, is not as urgent as shortness of breath. Elevated blood pressure and a respiratory rate of 18/min are important to assess but are not typically as indicative of a serious complication like a pulmonary embolism.

4. A nurse is preparing to administer dopamine hydrochloride at 4 mcg/kg/min for a client weighing 80 kg. How many mL/hr should the nurse set the IV infusion to deliver?

A. 6 mL/hr
B. 8 mL/hr
C. 12 mL/hr
D. 16 mL/hr

Correct answer: A

Rationale: To calculate the correct rate, you first need to convert the weight to micrograms: 4 mcg/kg/min * 80 kg = 320 mcg/min. Then, convert micrograms to milligrams: 320 mcg/min / 1000 = 0.32 mg/min. Next, calculate how many milligrams per hour: 0.32 mg/min * 60 min/hr = 19.2 mg/hr. Finally, determine the mL/hr rate by using the concentration provided: 19.2 mg/hr / 800 mg in 250 mL = 6 mL/hr. Therefore, the correct answer is 6 mL/hr. Choice B, 8 mL/hr, is incorrect as it does not reflect the accurate calculation based on the weight and drug concentration. Choices C and D, 12 mL/hr and 16 mL/hr, are also incorrect as they do not align with the correct calculation of the infusion rate for dopamine hydrochloride based on the client's weight and the medication concentration.

5. How should fluid balance be monitored in a patient receiving diuretics?

A. Monitor daily weight
B. Monitor intake and output
C. Check for edema
D. Monitor blood pressure

Correct answer: A

Rationale: Corrected Question: To assess fluid balance in a patient receiving diuretics, monitoring daily weight is the most accurate method. This is because diuretics primarily affect fluid levels in the body, leading to changes in weight due to fluid loss. While monitoring intake and output, checking for edema, and monitoring blood pressure are important aspects of patient care, they do not provide as direct and accurate information about fluid balance as daily weight monitoring specifically in patients on diuretics.