Final answer:
To calculate the flow rate for Aminophylline infusion, convert the ordered dose to mcg, then use the given concentration to find the volume required per hour. The correct flow rate is 15 ml/hr.
Step-by-step explanation:
The subject of this question involves calculating the flow rate for infusing Aminophylline based on the dosage and concentration provided. First, we must convert the order from mg/hr to mcg/hr, since the concentration on hand is given in mcg/ml. 60 mg/hr is equivalent to 60,000 mcg/hr. We have Aminophylline 500 mcg/250 ml, which simplifies to 2 mcg/ml.
To find the flow rate (ml/hr), we can set up a ratio:
- 500 mcg : 250 ml = 60,000 mcg : x ml
- x = (60,000 mcg * 250 ml) / 500 mcg
- x = (60 * 250 ml) / 1
- x = 15,000 ml / 1
- x = 15 ml/hr
Hence, the correct flow rate to infuse Aminophylline at 60 mg/hr, given a concentration of Aminophylline 500 mcg in 250 ml of solution, is 15 ml/hr, which corresponds to option b).