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The physician ordered an IV of Dobutamine at 5 mcg/Kg/min. The patient weighs 198 lbs. The IV solution is 500 mg Dobutamine in 250 ml D5W. How many ml/hr should the pump be set?

Answer :

Final answer:

To calculate the ml/hr the pump should be set at, we need to use the formula: C1V1 = C2V2. Given values: C1 (desired concentration) = 5 mcg/Kg/min, V1 (desired volume) = ?, C2 (given concentration) = 500 mg/250 mL, V2 (given volume)= 250 mL. By substituting the values into the formula, we get V1 = (C2 × V2) / C1 = (500 mg/250 mL × 250 mL) / (5 mcg/Kg/min × 90 Kg) = 125 mL/hr.

Explanation:

To calculate the ml/hr the pump should be set at, we need to use the formula:
C1V1 = C2V2

Given values:
C1 (desired concentration) = 5 mcg/Kg/min
V1 (desired volume) = ?
C2 (given concentration) = 500 mg/250 mL
V2 (given volume)= 250 mL

We need to convert the patient's weight from lbs to Kg:
198 lbs × 1 Kg/2.2 lbs = 90 Kg

Substituting the values into the formula, we get:
V1 = (C2 × V2) / C1 = (500 mg/250 mL × 250 mL) / (5 mcg/Kg/min × 90 Kg) = 125 mL/hr
Therefore, the pump should be set at 125 ml/hr.

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