Dopamine 3 mcg/kg/min. The client weighs 176 pounds. The drug is available as 500 mg in 250 mL. Round your answer.
The Correct Answer is ["7.2"]
Step-by-Step Calculation:
Step 1: Convert the client's weight from pounds to kilograms.
176 lbs ÷ 2.2 = 80 kg
Result = 80 kg
Step 2: Calculate the total dose of dopamine in mcg/min.
3 mcg/kg/min × 80 kg = 240 mcg/min
Result = 240 mcg/min
Step 3: Convert the total dose from mcg/min to mg/min.
240 mcg/min ÷ 1000 = 0.24 mg/min
Result = 0.24 mg/min
Step 4: Determine the concentration of dopamine in mg/mL.
500 mg ÷ 250 mL = 2 mg/mL
Result = 2 mg/mL
Step 5: Calculate the infusion rate in mL/min.
0.24 mg/min ÷ 2 mg/mL = 0.12 mL/min
Result = 0.12 mL/min
Step 6: Convert the infusion rate to mL/hr.
0.12 mL/min × 60 min/hr = 7.2 mL/hr
Result = 7.2 mL/hr
Final Result:
The IV pump should be set to 7.2 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Core temperature is important to monitor in many clinical situations, but it is not the primary concern for a client with an abdominal aortic aneurysm. While fever can indicate infection, which is a potential complication, it is not directly related to the immediate risks associated with AAA.
Choice B Reason:
Blood pressure is the most critical vital sign to monitor in a client with an abdominal aortic aneurysm. Elevated blood pressure can increase the risk of aneurysm rupture, which is a life-threatening emergency. Maintaining blood pressure within a safe range is essential to prevent complications and ensure the stability of the aneurysm.
Choice C Reason:
Pulse rate is also important to monitor, but it is not as directly indicative of the risk of aneurysm rupture as blood pressure. While changes in pulse rate can signal cardiovascular stress or other issues, blood pressure provides more direct information about the forces acting on the aneurysm.
Choice D Reason:
Respiratory rate is a vital sign that can indicate respiratory distress or other systemic issues, but it is not the primary concern in the context of an abdominal aortic aneurysm. Blood pressure remains the most critical parameter to monitor to prevent rupture and manage the condition effectively.
Correct Answer is ["20"]
Explanation
Step-by-Step Calculation:
Step 1: Identify the prescribed dose.
1000 units per hour
Step 2: Identify the concentration of heparin in the IV bag.
25,000 units in 500 mL
Step 3: Calculate the concentration of heparin per mL.
25,000 units ÷ 500 mL = 50 units/mL
Result = 50 units/mL
Step 4: Calculate the IV pump rate in mL/hr.
1000 units per hour ÷ 50 units/mL = 20 mL/hr
Result = 20 mL/hr
Final Result:
The IV pump should be set to 20 mL/hr.
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