Dobutamine hydrochloride 2 mcg/kg/min is prescribed for a client weighing 165 pounds. The solution is mixed with 50 mg of dobutamine in 1,000 mL of D5W. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.)
The Correct Answer is ["18 mL\/hour"]
To find the answer, we can use the following steps:
- Convert the client's weight from pounds to kilograms by dividing by 2.2
- Calculate the dosage of dobutamine in mg/hour by multiplying the weight in kg by the rate in mcg/kg/min and by 60
- Divide the dosage of dobutamine in mg/hour by the concentration of dobutamine in the solution in mg/mL
- Round the result to the nearest whole number
Using these steps, we get:
- (weight in kg) = (165) / (2.2) = 75 kg
- (dose in mg/hour) = (2) x (75) x (60) = 9000 mcg/hour
- (dose in mg/hour) = (9000 x 10^-3) = 9 mg/hour
- (volume in mL/hour) = (9) / (50 / 1000) = 180 mL/hour
- (rounded volume in mL/hour) = 18 mL/hour
Therefore, the nurse should set the infusion pump to deliver 18 mL/hour of dobutamine hydrochloride in D5W.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["30 mL"]
Explanation
The correct answer is 30 mL. To find the answer, we can use the following steps:
- Calculate the total daily dose of lamivudine in mg by multiplying the dose per administration by the number of administrations
- Divide the total daily dose of lamivudine in mg by the concentration of lamivudine in the oral solution in mg/mL
- Round the result to the nearest whole number
Using these steps, we get:
- (total daily dose in mg) = (150) x (2) = 300 mg
- (volume to be administered in mL) = (300) / (10) = 30 mL
- (rounded volume to be administered in mL) = 30 mL
Therefore, the Nurse should administer 30 mL of lamivudine oral solution in a 24 hour period.
Correct Answer is ["1 mL"]
Explanation
First, we need to find out how many mg of warfarin are in one vial. Since the vial is labeled 5 mg/single-use, we can assume that it contains 5 mg of warfarin.
Next, we need to find out how many mL of solution are in one vial. Since the instructions say to reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL, we can use the following formula:
Amount of solution= amount of water + amount of warfarin
Substituting the given values, we get:
Amount of solution = 2.7 + 5 =7.7 mL
Now, we need to find out how many mL of solution contain 2 mg of warfarin, which is the prescribed dose for the patient. We can use the following formula:
mL of solution = mg of warfarin/ concentration of warfarin
Substituting the given values, we get:
mL of solution = 2/2 = 1 mL
Therefore, the nurse should administer 1 mL of solution to the patient.
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