IAHCSMM Packaging and Sterile Barrier Systems 3 — Questions and Answers
Question 1: Which sterilization method requires special packaging materials that are permeable to the sterilant gas?
- Steam autoclave only
- Ethylene oxide (EO) sterilization (Correct answer)
- Dry heat sterilization
- Gamma irradiation
Correct answer: Ethylene oxide (EO) sterilization
EO sterilization requires packaging permeable to ethylene oxide gas so the sterilant can penetrate and contact all surfaces of the device.
Question 2: When wrapping instruments using the square (envelope) fold technique, how many wraps are typically used to achieve an aseptic presentation?
- One wrap only
- Two wraps (sequential or simultaneous) (Correct answer)
- Three wraps
- Four wraps
Correct answer: Two wraps (sequential or simultaneous)
The sequential double-wrap method creates two separate sterile barriers and allows aseptic delivery to the sterile field.
Question 3: A technician notices that a peel pouch has a 'channel seal' defect after sterilization. What is the correct action?
- Re-label the pouch and return it to stock
- Reject the pack, reprocess the item, and repackage it (Correct answer)
- Place a second pouch over the defective one
- Add tape over the channel and release for use
Correct answer: Reject the pack, reprocess the item, and repackage it
A channel seal (incomplete seal) compromises the sterile barrier; the item must be rejected, reprocessed, and repackaged in new packaging.
Question 4: What is the primary reason instruments should not be packaged while still wet after washing?
- Wet instruments may rust the packaging
- Moisture can prevent sterilant penetration and support microbial growth (Correct answer)
- It makes the package heavier than allowed
- Wet items cause chemical indicators to fail
Correct answer: Moisture can prevent sterilant penetration and support microbial growth
Residual moisture can create wet packs during steam sterilization and may support microbial growth, compromising sterility.
Question 5: Which labeling information is REQUIRED on a sterile package according to best practices?
- The technician's personal phone number
- Sterilizer number, cycle number, load number, and date (Correct answer)
- The color of the wrapping material used
- The purchase price of the instrument
Correct answer: Sterilizer number, cycle number, load number, and date
Packages must be traceable; required label data includes sterilizer ID, load/cycle number, and the date processed to support recall and traceability.
Question 6: Nonwoven polypropylene wrap is preferred over woven textile wrap for sterile packaging primarily because it:
- Is less expensive per sheet
- Provides a superior, consistent microbial barrier and is lint-free (Correct answer)
- Can be reused more times before disposal
- Changes color when exposed to steam
Correct answer: Provides a superior, consistent microbial barrier and is lint-free
Nonwoven wrap offers a more reliable, consistent microbial barrier and is lint-free compared to woven textiles, reducing contamination risk.
Question 7: What action should be taken if a package is found to have a torn or punctured wrapper before it is opened for use?
- Use the item if the instrument appears visually clean
- Consider the item non-sterile and send it for reprocessing (Correct answer)
- Cover the tear with sterile tape and proceed
- Check the chemical indicator; if it passed, use the item
Correct answer: Consider the item non-sterile and send it for reprocessing
Any breach in packaging integrity means sterility cannot be assumed; the item must be reprocessed regardless of the chemical indicator status.
IAHCSMM Packaging and Sterile Barrier Systems 3
Which sterilization method requires special packaging materials that are permeable to the sterilant gas?