CER Endoscope Repair and Maintenance Questions and Answers 5 — Questions and Answers
Question 1: Which type of endoscope damage is typically classified as 'functional' rather than 'cosmetic'?
- Superficial scratches on the control body housing
- Faded serial number label
- Impaired suction due to a partial channel obstruction (Correct answer)
- Minor discoloration of the umbilical cord
Correct answer: Impaired suction due to a partial channel obstruction
Impaired suction from a channel obstruction directly affects clinical performance and patient safety, making it a functional defect requiring immediate repair.
Question 2: What is the purpose of the endoscope's universal cord water-resistant cap during reprocessing?
- To protect the electrical light guide connector from fluid exposure during immersion (Correct answer)
- To hold the angulation lock in position during cleaning
- To direct water flow through the air/water channel
- To prevent air from entering the suction valve during brushing
Correct answer: To protect the electrical light guide connector from fluid exposure during immersion
The water-resistant cap seals the electrical contacts of the light source connector to prevent fluid ingress and short-circuit damage during immersion reprocessing.
Question 3: A flexible endoscope returned from repair should be subjected to which test before returning to clinical use?
- Only a visual inspection for cosmetic damage
- A full reprocessing cycle followed by leak testing and functional verification (Correct answer)
- A high-level disinfection cycle only if the repair involved internal components
- A pressure test by the repair technician only, with no facility-side testing needed
Correct answer: A full reprocessing cycle followed by leak testing and functional verification
After repair, the scope must undergo complete reprocessing, leak testing, and functional checks to confirm it is both safe and clinically ready.
Question 4: When evaluating endoscope image quality, 'salt and pepper' artifact in the center of the image most likely indicates:
- Moisture trapped on the objective lens
- Damage to the CCD/CMOS chip pixels (Correct answer)
- A loose light guide bundle connection
- Contamination inside the air/water channel
Correct answer: Damage to the CCD/CMOS chip pixels
Dead or hot pixels on the CCD/CMOS image sensor appear as fixed 'salt and pepper' noise in the center of the image, indicating sensor damage.
Question 5: Which practice helps prevent 'scope pooling' damage in an endoscopy unit?
- Using a single endoscope for all cases to reduce handling
- Rotating scope usage evenly and tracking each scope's procedure count (Correct answer)
- Storing all scopes in the procedure room between cases
- Performing leak tests only on scopes that appear damaged
Correct answer: Rotating scope usage evenly and tracking each scope's procedure count
Rotating scope usage evenly prevents individual scopes from accumulating disproportionate wear, extending the fleet's overall lifespan.
Question 6: A damaged endoscope elevator mechanism (found on duodenoscopes) that cannot be fully raised or lowered should be:
- Manually adjusted with forceps during procedures
- Used only for diagnostic cases where no accessories are passed
- Removed from service until repaired by a qualified technician (Correct answer)
- Reported but continued in service with physician awareness
Correct answer: Removed from service until repaired by a qualified technician
A malfunctioning elevator mechanism compromises both clinical function and the ability to reprocess the duodenoscope's distal cap area, requiring immediate removal from service.
Question 7: What does the term 'TASS' stand for in the context of endoscope reprocessing failure investigation?
- Toxic Anterior Segment Syndrome (Correct answer)
- Total Automated Scope Sterilization System
- Tissue Adherence and Surface Scoring
- Tracked Adverse Scope Safety System
Correct answer: Toxic Anterior Segment Syndrome
TASS (Toxic Anterior Segment Syndrome) is a rapid, sterile postoperative inflammation that can result from endoscope reprocessing residue or chemical contamination introduced during ophthalmic procedures.
CER Endoscope Repair and Maintenance Questions and Answers 5
Which type of endoscope damage is typically classified as 'functional' rather than 'cosmetic'?