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A premix bag of Dobutamine contains 1000 mg in 250 ml. If the order is for Dobutamine 5 mcg/kg/min and the patient weighs 195 lb, what is the rate you would enter on the IV pump?

Answer :

To determine the IV pump rate for Dobutamine, the patient's weight is converted to kilograms, the dosage needed per minute is calculated, and then the flow rate is computed using a proportion based on the medication concentration. The IV pump rate should be set to approximately 6.65 ml/hr.

To calculate the IV pump rate for administering Dobutamine, we first need to convert the patient's weight from pounds to kilograms. Since there are 2.2 pounds in a kilogram, we divide the patient's weight by 2.2:

195 lb / 2.2 = 88.64 kg (rounded to two decimal places)

Next, we calculate the total dosage of Dobutamine needed per minute:

5 mcg/kg/min * 88.64 kg = 443.2 mcg/min

Now, we convert micrograms to milligrams since the pre-mix bag's concentration is in milligrams:

443.2 mcg/min * (1 mg / 1000 mcg) = 0.4432 mg/min

Since the bag contains 1000 mg in 250 ml, we set up a proportion to find the rate at which the solution must be administered:

(0.4432 mg/min) / (1000 mg) = (x ml/min) / (250 ml)

x ml/min = (0.4432 mg/min) * (250 ml) / (1000 mg)

x = 0.1108 ml/min

To find the rate in ml/hr, which is a common IV pump setting, we multiply by 60:

0.1108 ml/min * 60 min/hr = 6.648 ml/hr

The IV pump rate should be set to approximately 6.65 ml/hr.

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