Endoscope Reprocessing & Infection Prevention

ENDOSCOPE REPROCESSING

SGNA Standards, FDA Requirements, and Joint Commission Compliance

Learning Objectives

Upon completion, the participant will be able to:

Explain the critical importance of proper endoscope reprocessing in preventing healthcare-associated infections

Describe the seven essential steps of endoscope reprocessing per SGNA standards

Compare high-level disinfection (HLD) to sterilization and identify appropriate applications

Identify special considerations for duodenoscope reprocessing and the FDA safety communication

Implement quality assurance monitoring and documentation requirements

Apply personal protective equipment (PPE) requirements for reprocessing staff

SECTION 1: THE CRITICAL IMPORTANCE OF PROPER REPROCESSING

Infection Risk and Outbreak History

Flexible endoscopes are complex, reusable medical devices that contact mucous membranes and sterile body cavities. Their intricate design with narrow lumens, channels, and crevices makes thorough cleaning challenging. Improper reprocessing has been linked to transmission of serious pathogens including carbapenem-resistant Enterobacteriaceae (CRE), Pseudomonas aeruginosa, Klebsiella pneumoniae, hepatitis B and C, and Helicobacter pylori.

FDA SAFETY ALERT - DUODENOSCOPES: Multiple outbreaks of CRE and other multidrug-resistant organisms have been linked to contaminated duodenoscopes (used for ERCP). The complex elevator mechanism at the distal tip is extremely difficult to clean and disinfect. This led to FDA safety communications, manufacturer modifications, and enhanced reprocessing requirements.

Spaulding Classification

CRITICAL ITEMS: Contact sterile tissue or vascular system. Require STERILIZATION. Examples: biopsy forceps, sphincterotomes, polypectomy snares.

SEMI-CRITICAL ITEMS: Contact mucous membranes or non-intact skin. Require HIGH-LEVEL DISINFECTION minimum. Examples: colonoscopes, gastroscopes, bronchoscopes.

NON-CRITICAL ITEMS: Contact intact skin only. Require low-level disinfection. Examples: blood pressure cuffs, bed rails.

SECTION 2: THE SEVEN STEPS OF ENDOSCOPE REPROCESSING

SGNA STANDARD: All seven steps must be completed in sequence for every endoscope after every patient use. Skipping or abbreviating any step compromises patient safety.

Step 1: Pre-Cleaning (Bedside)

Begins IMMEDIATELY at point of use, before bioburden dries. Wipe external surfaces with enzymatic detergent. Suction enzymatic solution through all channels. Flush air/water channels. Transport in closed, leak-proof container labeled 'BIOHAZARD'. This step is critical - dried organic material is exponentially harder to remove.

Step 2: Leak Testing

Performed BEFORE immersion to detect damage that could allow fluid intrusion into internal components. Pressurize scope per manufacturer instructions. Submerge and flex all sections, observing for bubbles. A positive leak test requires immediate removal from service and repair. Document results.

Step 3: Manual Cleaning

THE MOST CRITICAL STEP. High-level disinfection/sterilization cannot be achieved if organic material remains. Completely immerse scope in fresh enzymatic detergent. Brush ALL channels with appropriately sized brushes (inspect brushes for wear). Flush all channels per manufacturer IFU. Clean all external surfaces. Rinse thoroughly. Time in detergent per manufacturer IFU (typically 5+ minutes).

CRITICAL: If manual cleaning is inadequate, HLD will NOT eliminate pathogens. Biofilm can protect organisms from disinfectant contact. Every channel must be brushed - not just flushed.

Step 4: High-Level Disinfection (HLD)

Immerse scope in FDA-cleared high-level disinfectant/sterilant. Common agents: glutaraldehyde (2%+), ortho-phthalaldehyde (OPA), peracetic acid, hydrogen peroxide. Follow manufacturer IFU for concentration, temperature, and contact time (typically 20-45 minutes at 20-25°C). All channels must have complete disinfectant contact. Automated endoscope reprocessors (AERs) are preferred for consistency.

Step 5: Rinsing

Remove all disinfectant residue to prevent patient mucosal injury. Use sterile, filtered, or bacteria-free water. Rinse all external surfaces and internal channels. Follow manufacturer specifications for water quality and rinse volume/time.

Step 6: Drying

Moisture promotes microbial growth. Purge all channels with 70% alcohol to facilitate drying. Force air through all channels. External surfaces with lint-free cloth. Complete drying before storage is essential.

Step 7: Storage

Store in manner that prevents recontamination and facilitates drying. Hang vertically in dedicated, ventilated cabinet. Valves and caps removed or loosely attached. Protect from environmental contamination. Maximum storage time before re-disinfection per facility policy (typically 5-7 days, varies by evidence).

SECTION 3: DUODENOSCOPE CONSIDERATIONS AND QUALITY ASSURANCE

FDA REQUIREMENT: Facilities using duodenoscopes with elevator channels must implement supplemental measures beyond standard HLD. Options include: 1) Microbiological culturing and quarantine, 2) Sterilization using approved methods, 3) Use of duodenoscopes with disposable components at the distal end. These requirements apply to all ERCP scopes.

ELEVATOR MECHANISM CHALLENGE: The elevator at the distal tip of duodenoscopes (used to manipulate ERCP accessories) has an extremely complex design with tight crevices that are nearly impossible to fully clean and access with disinfectant. This has led to multiple patient infections and deaths.

Quality Assurance Requirements

CHEMICAL MONITORING: Test disinfectant minimum recommended concentration (MRC) before EACH use. Document results. Discard if below MRC regardless of expiration date.

BIOLOGICAL MONITORING: Periodic microbiological surveillance cultures per facility policy. Immediate action if positive cultures.

DOCUMENTATION: Complete traceability records: scope ID, patient, date/time, reprocessing staff, disinfectant lot/expiration, MRC results, AER cycle data.

COMPETENCY: Initial and annual competency validation for all reprocessing staff. Manufacturer-specific training for each scope type.

Personal Protective Equipment

Required PPE for reprocessing: fluid-resistant gown, double gloves (chemical-resistant outer), face shield or goggles + mask, shoe covers. Adequate ventilation required when working with disinfectants. Know location of eyewash station and safety data sheets.