Question 74

16 days supply is in an Albuterol HFA inhaler when inhaled 2 puffs every 4 hours.

When using the Albuterol HFA inhaler at a dosage of 2 puffs every 4 hours, there are 6 doses taken in a 24-hour period. Given that the inhaler contains 200 inhalations, dividing 200 by 12 (the total number of puffs used per day) results in approximately 16.67 days of supply, which rounds down to 16 days.

A) 10

Option A is incorrect because 10 days of supply would imply using the inhaler at a far greater rate than 2 puffs every 4 hours. With 6 doses per day, the inhaler would last longer than 10 days.

B) 16

Option B is correct as it accurately reflects the calculation of the number of days supply based on the usage of 2 puffs every 4 hours. With 200 inhalations divided by 12 puffs per day, the inhaler lasts for approximately 16 days.

C) 30

Option C is incorrect as it suggests that the inhaler would last for 30 days. This would only be feasible if the frequency of use was significantly lower than 2 puffs every 4 hours, which is not the case here.

D) 90

Option D is also incorrect since it implies an unrealistic duration for the inhaler supply given the prescribed usage. At 2 puffs every 4 hours, the inhaler cannot last for 90 days.

Conclusion

The correct answer is 16 days, as determined by the proper calculation of puffs consumed daily. All other options fail to accurately represent the duration of the inhaler supply based on the specified dosing schedule, confirming that 16 days is the only valid answer.