CER Handling, Transport, and Storage Questions and Answers 2 — Questions and Answers
Question 1: What is the maximum recommended storage time for a reprocessed endoscope before it must be reprocessed again?
- 24 hours
- 48 hours
- Per manufacturer and facility policy, generally 5–7 days in a validated drying cabinet (Correct answer)
- 30 days if stored in a sealed bag
Correct answer: Per manufacturer and facility policy, generally 5–7 days in a validated drying cabinet
Storage time before reprocessing (hang time) varies by facility, but validated drying cabinets may allow 5–7 days; facilities must establish evidence-based policies.
No universal standard mandates a specific hang time. Research has demonstrated that endoscopes stored in a properly validated, filtered-air drying cabinet after complete drying can remain safe for 5–7 days or longer. However, scopes stored in unventilated cabinets or in humid conditions have shown contamination within 24–48 hours. Facilities must establish hang-time policies based on their storage infrastructure and may require reprocessing if the interval is exceeded.
Question 2: Which storage method creates the highest risk of endoscope recontamination?
- Vertical hanging in a HEPA-filtered drying cabinet
- Horizontal coiled storage in an enclosed, unventilated cabinet (Correct answer)
- Vertical hanging in a ventilated open cabinet
- Hanging vertically in filtered air with coiled cord
Correct answer: Horizontal coiled storage in an enclosed, unventilated cabinet
Horizontal coiled storage traps moisture in the bends, and unventilated conditions promote microbial growth, creating high contamination risk.
Horizontal storage allows moisture to pool in channel bends rather than drain by gravity. Coiling may also stress the insertion tube. Unventilated cabinets do not allow moisture to escape, creating humid conditions that support bacterial growth. A study by Alfa et al. showed that scopes stored horizontally in unventilated cabinets had higher contamination rates than those stored vertically with airflow.
Question 3: What must be done to an endoscope that has been stored beyond the facility's established hang time?
- Wipe the exterior with alcohol and use immediately
- Reprocess fully before use (Correct answer)
- Perform only a distal-tip inspection before use
- Soak in 70% isopropyl alcohol for 5 minutes
Correct answer: Reprocess fully before use
An endoscope that has exceeded its storage hang time must undergo full reprocessing before patient use.
If an endoscope has been stored beyond the facility's validated hang time, it cannot be assumed to be free of contamination. Microbial growth may have occurred during extended storage. The scope must undergo complete reprocessing — manual cleaning, leak test, HLD or sterilization — before use on any patient. Quick surface cleaning or brief disinfectant contact is not an acceptable substitute for full reprocessing.
Question 4: Which item should accompany every endoscope during transport to the reprocessing area?
- The patient's medical record
- A completed patient-to-scope traceability record (Correct answer)
- A sterile drape
- A copy of the scope manufacturer's IFU
Correct answer: A completed patient-to-scope traceability record
Patient-to-scope traceability documentation travels with the scope to link it to the patient for outcome tracking and infection control.
Regulatory bodies (The Joint Commission, CMS, SGNA) require that each endoscope be traceable to every patient on whom it was used. A traceability record (paper or electronic) should accompany or be linked to each scope during transport, containing scope ID, patient ID, procedure date, and clinician. This documentation is completed and filed after reprocessing to create an unbroken audit trail for infection control investigations.
Question 5: How should endoscope accessories (biopsy forceps, cytology brushes) be managed after use?
- Reused for subsequent patients after a water rinse
- Single-use accessories must be discarded; reusable accessories must undergo complete reprocessing including sterilization (Correct answer)
- Soaked in enzymatic detergent and reused within the same session
- Wiped with a disinfectant wipe and reused
Correct answer: Single-use accessories must be discarded; reusable accessories must undergo complete reprocessing including sterilization
Single-use accessories must never be reused. Reusable accessories are critical items that penetrate tissue and require sterilization.
Endoscope accessories such as biopsy forceps, sphincterotomes, and cytology brushes penetrate mucosal tissue, classifying them as critical items requiring sterilization per the Spaulding classification. Most are now single-use and must be discarded after each patient — reprocessing and reuse of single-use accessories is illegal under FDA regulations and facility liability law. Reusable accessories (some snares, dilators) must be fully cleaned and sterilized.
Question 6: What is the purpose of 70% isopropyl alcohol flushing through endoscope channels after high-level disinfection?
- To achieve sterilization of the channels
- To displace water and facilitate drying to prevent microbial proliferation during storage (Correct answer)
- To neutralize residual chemical disinfectant
- To lubricate the channels for next use
Correct answer: To displace water and facilitate drying to prevent microbial proliferation during storage
Alcohol flush after HLD facilitates rapid drying by displacing water, inhibiting microbial growth during storage.
After HLD and rinsing, channels still contain residual water. Flushing with 70% isopropyl alcohol displaces this water because alcohol is miscible with water and evaporates rapidly. This accelerates channel drying when followed by forced-air purging. Dry channels do not support microbial growth during storage. This step is particularly important for endoscopes stored between uses, as residual moisture is the primary cause of post-reprocessing contamination.
CER Handling, Transport, and Storage Questions and Answers 2
What is the maximum recommended storage time for a reprocessed endoscope before it must be reprocessed again?