Question

1. To help control Winnie’s pain after surgery, the veterinarian orders a constant rate infusion of Butorphanol (10 mg/ml) to be administered at 13 mcg/kg/hr. The fluid rate will be 150 ml/hr, and the fluid bag contains 2 L.
   1. Identify the dosage in this problem. (1 point)
   2. How many micrograms per hour of Butorphanol should be delivered? (2 points)
   3. How many hours will the bag last for the patient? (2 points)
   4. How many milligrams of Butorphanol should be added to the bag? (2 points)
   5. How many milliliters of Butorphanol should Karen add? (2 points)

Answer 1

Ordered dose 13 mcg/kg/hr.

Available drug Butorphanol (10 mg/ml)

The fluid rate will be 150 ml/hr, and the fluid bag contains 2L.

There is no age given so imagine Winnie’s age is 60yrs

a. dose is 13 mcg/kg/hr.

b. Dose per hour will be 780mcg

13mcg/kg x 60kg = 780mcg/hr

c. The fluid rate will be 150 ml/hr, and the fluid bag contains 2 L(2000ml).

so, total fluid will be administered in 13 hours 20 minutes.

d. Dose per hour is 780mcg

Dose per minute will be 13 mcg

780mcg + 60min = 13mcg/min

the total fluid will be administered in 13 hours 20 minutes (800min)

so, the total dose will be 10, 400 mcg (10.4 mg)

(10.4 mg)

800min x 13mcg/min = 10, 400mcg

Butorphanol present in (10 mg/ml)

So, in round 1 ml of Butorphanol should be added to the bag.