Question

question 2 (mandatory) (2 points)
a physician writes a prescription for proair hfa (albuterol sulfate) for chronic obstructive pulmonary disease (copd). the instructions state: inhale 1 to 2 mdi puffs (90 - 180mcg) q 4 - 6 hours.
how many mcg are needed to fill this rx per day?

Explanation:

Step1: Determine the minimum - frequency and minimum - dosage

The minimum number of puffs per administration is 1, and the minimum time - interval between administrations is 6 hours. In a 24 - hour day, the number of administrations $n_{min}=\frac{24}{6}=4$. The minimum dosage per puff is 90 mcg. So the minimum total dosage per day $D_{min}=1\times90\times4 = 360$ mcg.

Step2: Determine the maximum - frequency and maximum - dosage

The maximum number of puffs per administration is 2, and the maximum number of administrations in a 24 - hour day occurs when the time - interval between administrations is 4 hours. So the number of administrations $n_{max}=\frac{24}{4}=6$. The maximum dosage per puff is 180 mcg. So the maximum total dosage per day $D_{max}=2\times180\times6=2160$ mcg.

Answer:

The amount of mcg needed to fill this RX per day is between 360 mcg and 2160 mcg.