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Difficulty: Very hardStandard and Transmission-Based Precautions

A client on Contact Precautions for a severe *Clostridioides difficile* infection has been discharged. The nurse is responsible for cleaning and disinfecting the reusable medical equipment (e.g., intravenous pump, telemetry monitor) left in the room before returning it to the central supply department. Arrange the following actions in the correct chronological sequence to ensure safe and effective infection control.

  1. 1Perform hand hygiene and don a clean isolation gown and gloves.
  2. 2Wipe the equipment with a neutral detergent cloth to remove any visible organic soil.
  3. 3Apply an EPA-registered sodium hypochlorite solution to all surfaces of the equipment.
  4. 4Allow the equipment to air dry undisturbed to ensure the required sporicidal contact time.
  5. 5Doff the gown and gloves inside the room and wash hands thoroughly with soap and water.

Answer

The correct sequence is to first don appropriate PPE, clean away visible organic soil with a detergent, apply a sporicidal bleach solution, allow the equipment to air dry for the required contact time, and finally doff the PPE and wash hands with soap and water.
The correct sequence integrates the principles of Contact Precautions with the specific environmental requirements for eradicating *C. difficile* spores. The nurse must first don PPE to prevent self-contamination. Next, the equipment must be cleaned with a detergent, because organic soil can deactivate bleach. Once clean, a sporicidal sodium hypochlorite solution is applied and must be allowed to air dry completely to ensure the necessary contact time for spore destruction. Finally, after doffing PPE, the nurse must wash hands with soap and water, as alcohol-based sanitizers cannot neutralize the resilient coating of *C. difficile* spores.

Step-by-Step Solution

1
Protect against occupational exposure.
The nurse performs hand hygiene and dons an isolation gown and gloves.
Contact Precautions are mandatory when handling any items from the room of a client with *C. difficile* to prevent transmission of spores to the nurse's skin or clothing.
2
Remove physical barriers to disinfection.
The nurse wipes the equipment with a neutral detergent to remove organic soil.
Organic matter, such as stool, physically shields pathogens and can deactivate the active ingredients in disinfectants like sodium hypochlorite.
3
Apply the appropriate sporicidal agent.
The nurse applies an EPA-registered sodium hypochlorite (bleach) solution.
Standard alcohol-based and quaternary ammonium disinfectants do not kill *C. difficile* spores; a bleach-based solution is required for terminal disinfection.
4
Ensure adequate contact time.
The nurse allows the equipment to air dry undisturbed.
Disinfectants must remain wet on the surface for a manufacturer-specified duration to guarantee sporicidal efficacy; wiping it dry prematurely aborts this process.
5
Remove PPE safely and perform targeted hand hygiene.
The nurse doffs the gown and gloves and washes hands with soap and water.
Hand sanitizer is ineffective against spores. Friction with soap and running water is necessary to physically dislodge and rinse away any spores that may have reached the hands.

Key Concept

Terminal cleaning for *Clostridioides difficile* requires strict adherence to Contact Precautions, a two-step clean-then-disinfect process using a sporicidal agent (bleach), uninterrupted contact time, and mechanical hand washing with soap and water.
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Topics

Standard and Transmission-Based Precautions

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