24) You receive an order for Dopamine 20 mcg/kg/minute. The bag is labeled Dopamine100mg/50ml. The patient weighs 88 lbs. What is the infusion rate in ml/hr? Recordanswer to the nearest whole number.
Question
- You receive an order for Dopamine 20 mcg/kg/minute. The bag is labeled Dopamine100mg/50ml. The patient weighs 88 lbs. What is the infusion rate in ml/hr? Recordanswer to the nearest whole number.
Solution
First, we need to convert the patient's weight from pounds to kilograms since the dosage is prescribed in mcg/kg/minute. We know that 1 kg is approximately 2.2 lbs.
So, 88 lbs / 2.2 = 40 kg (rounded to the nearest whole number)
Next, we need to calculate the total micrograms per minute the patient needs. We do this by multiplying the patient's weight in kg by the prescribed dosage:
40 kg * 20 mcg/kg/minute = 800 mcg/minute
Now, we need to convert the dopamine concentration from mg to mcg since our dosage is in mcg. We know that 1 mg = 1000 mcg.
So, 100 mg = 100,000 mcg
The bag contains 100,000 mcg in 50 ml, so each ml contains 100,000 mcg / 50 ml = 2000 mcg/ml
Now, we can calculate how many ml per minute are needed by dividing the total mcg per minute by the mcg per ml:
800 mcg/minute / 2000 mcg/ml = 0.4 ml/minute
Finally, we need to convert this to ml/hr since the question asks for the infusion rate in ml/hr. We know there are 60 minutes in an hour, so:
0.4 ml/minute * 60 minutes/hour = 24 ml/hr
So, the infusion rate is 24 ml/hr.
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