Question

live class: week 14 review
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domain 4 - category 3 - core cor
order quantity
your turn
question 1: a provider writes a prescription for prednisolone acetate with instructions to instill 3 drops in each eye 2 times daily for 5 days. if there are 5 ml in one bottle of prednisolone acetate, how many bottles should be dispensed? (bottles are dispensed unopened and not as partial fills.)
a. 1 bottle
b. 2 bottles
c. 3 bottles
d. 4 bottles

Explanation:

Step1: Calculate total number of drops

Number of drops per day for one - eye is $3$ drops, for two eyes is $3\times2 = 6$ drops. Twice a day, so number of drops per day is $6\times2=12$ drops. For 5 days, total number of drops is $12\times5 = 60$ drops.

Step2: Assume number of drops per mL

Typically, there are 20 drops per mL. So in a 5 - mL bottle, there are $5\times20 = 100$ drops. But we can also calculate based on the ratio directly.
Let's assume we need to find out the volume of liquid needed. Since we have 60 drops, and if we assume a standard of 20 drops per mL, the volume $V$ of liquid needed is $\frac{60}{20}=3$ mL.

Step3: Calculate number of bottles

Since each bottle is 5 mL and we need 3 mL, and bottles are dispensed unopened, we need 1 bottle.

Answer:

a. 1 bottle