A nurse is preparing to administer dopamine 5 mcg/kg/min by continuous IV infusion to a client who weighs 220 lb. Available is 400 mg of dopamine in 250 mL of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mi/hr? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["18.8"]
To calculate the rate at which the IV pump should deliver dopamine, we can follow these steps:
Step 1: Convert the weight of the client from pounds to kilograms.
220 lb ÷ 2.2 = 100 kg (rounded to the nearest whole number)
Step 2: Calculate the total dose of dopamine per minute.
5 mcg/kg/min × 100 kg = 500 mcg/min
Step 3: Convert the dose from micrograms (mcg) to milligrams (mg).
500 mcg/min ÷ 1000 = 0.5 mg/min
Step 4: Determine the infusion rate in milliliters per hour (mL/hr).
The total volume of the solution is 250 mL.
The total dose of dopamine is 400 mg.
So, the infusion rate is (0.5 mg/min ÷ 400 mg) × 250 mL = 0.3125 mL/min.
Step 5: Convert the infusion rate from mL/min to mL/hr.
0.3125 mL/min × 60 min/hr = 18.75 mL/hr (rounded to the nearest tenth).
Therefore, the nurse should set the IV pump to deliver 18.8 mL/hr (rounded to the nearest tenth).
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Furosemide is a loop diuretic commonly used to treat fluid volume excess by promoting diuresis. One of the expected outcomes of furosemide administration is an increased urinary output as excess fluid is eliminated from the body. Therefore, if the medication has been effective, the nurse would expect to see an increased urinary output as a result of the diuretic effect.
Increased respiratory rate (B) is not an expected outcome of furosemide administration. It may occur in some cases due to increased fluid elimination and potential electrolyte imbalances, but it is not the primary indicator of the medication's effectiveness.
Decreased blood pressure (C) is a possible outcome of furosemide administration due to the diuretic effect and subsequent reduction in fluid volume. However, it is not the most specific indicator of the medication's effectiveness in this case.
Increased pulse (D) is not a typical finding associated with the effectiveness of furosemide. In fact, furosemide can sometimes cause a decrease in heart rate due to its impact on fluid and electrolyte balance.
Correct Answer is ["0.8"]
Explanation
To calculate the amount of morphine to administer, we can use the following formula:
Amount of medication (mL) = Desired dose (mg) / Concentration (mg/mL)
In this case, the desired dose is 8 mg and the concentration is 10 mg/mL.
Amount of medication (mL) = 8 mg / 10 mg/mL
Amount of medication (mL) = 0.8 mL
Therefore, the nurse should administer 0.8 mL of morphine.
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