Evolve HESI Practice Exam

To find the correct mL/hr rate for the IV infusion of terbutaline sulfate prescribed at 30 mcg/min, you first need to convert the dosage from micrograms to milliliters based on the drug's concentration.

Assuming terbutaline sulfate has a common concentration of 1 mg/mL (which is equivalent to 1000 mcg/mL), you can use the following steps:

1. Convert the prescribed rate from mcg to mg:

- 30 mcg/min is equal to 0.03 mg/min.

2. Determine how many milliliters of the drug will be needed per minute:

- Using the concentration of 1 mg/mL, you would calculate:

- 0.03 mg/min * (1 mL/1 mg) = 0.03 mL/min.

3. Convert the infusion rate from mL/min to mL/hr:

- Since there are 60 minutes in an hour, multiply the result by 60:

- 0.03 mL/min * 60 min/hr = 1.8 mL/hr.

However, the concentration can vary depending on the specific formulation prescribed. If, hypothetically, the drug concentration was higher