PEBC PEBC Drug Dispensing and Compounding 4

Question 1

A prescription calls for a 2% lidocaine solution. You have 4% lidocaine stock solution. How much 4% solution and sterile water are needed to prepare 200 mL of the 2% solution?

Accepted Answer

100 mL of 4% + 100 mL water

Answer

Using C1V1 = C2V2: 4% × V1 = 2% × 200 mL, so V1 = 100 mL of 4% solution; the remainder (100 mL) is sterile water.

Question 2

When compounding a topical ointment containing a drug that is classified as a hazardous substance, which primary engineering control is most appropriate?

Accepted Answer

Containment primary engineering control (C-PEC)

Answer

A containment primary engineering control (C-PEC) is required for hazardous drug compounding to protect the compounder and environment from exposure.

Question 3

A pharmacist receives a prescription for metformin 500 mg tablets with the sig 'i tab po BID ac'. What does 'ac' indicate?

Accepted Answer

Before meals

Answer

'ac' is the Latin abbreviation for 'ante cibum,' meaning before meals.

Question 4

During a compounding quality check, you discover that the beyond-use date (BUD) on a batch of sterile preparations was assigned based on manufacturer data rather than USP <797> guidelines. What is the most appropriate action?

Accepted Answer

Quarantine the batch and reassign BUD per USP <797>

Answer

USP <797> guidelines govern BUDs for sterile preparations; the batch must be quarantined and the BUD reassigned according to these standards before dispensing.

Question 5

A prescription is written for 'Tylenol #3'. Which controlled substance schedule does this combination product fall under in Canada?

Accepted Answer

Schedule III

Answer

Tylenol #3 contains codeine 30 mg and falls under Schedule III (narcotic) in Canada due to its codeine content exceeding exempted thresholds.

PEBC - Pharmacy Examining Board of Canada Practice Test

PEBC - Pharmacy Examining Board of Canada Practice Test

PEBC PEBC Drug Dispensing and Compounding 4