PTCB Sterile Compounding & Pharmacy Calculations 2

Question 1

What does tonicity refer to in the context of IV fluids?

Accepted Answer

The osmotic pressure of a solution relative to blood plasma

Answer

Tonicity describes the effective osmotic pressure of a solution relative to plasma (approximately 285–295 mOsm/kg), determining its effect on cell volume.

Question 2

If an order reads 'KCl 40 mEq in 100 mL NS,' what type of solution is this considered?

Accepted Answer

Small-volume parenteral (SVP)

Answer

Preparations ≤250 mL are classified as small-volume parenterals (SVPs), commonly called 'piggybacks' (IVPBs).

Question 3

How many micrograms are in 1 milligram?

Accepted Answer

1,000 mcg

Answer

There are 1,000 micrograms (mcg) in 1 milligram (mg).

Question 4

A drip order is for 500 mL over 4 hours with a drop factor of 20 gtts/mL. What is the drip rate?

Accepted Answer

42 gtts/min

Answer

(500 mL × 20 gtts/mL) ÷ (4 hr × 60 min/hr) = 10,000 ÷ 240 ≈ 41.7 ≈ 42 gtts/min.

Question 5

What PPE is required when handling hazardous drugs during compounding?

Accepted Answer

Double gloves, gown, eye protection, and respiratory protection as needed

Answer

USP <800> requires double gloves, a chemotherapy-rated gown, eye/face protection, and respiratory protection when handling hazardous drugs.

PTCB - Pharmacy Technician Certification Board Practice Test

PTCB - Pharmacy Technician Certification Board Practice Test

PTCB Sterile Compounding & Pharmacy Calculations 2