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Ch 20: L.O.
| Question | Answer |
|---|---|
| Clinical Contact Surfaces | Surfaces with a high risk for disease transmission that are directly touched or contaminated during patient treatment. |
| Housekeeping Surfaces | Surfaces with low risk for disease transmission, such as floors, walls, and sinks. |
| Touch Surfaces | Surfaces directly touched and contaminated during treatment (e.g., light handles, unit switches, pens). |
| Transfer Surfaces | Surfaces not directly touched, but frequently contacted by contaminated instruments (e.g., instrument trays). |
| Splash, Splatter, Droplet Surfaces | Surfaces contaminated by aerosol spray but do not directly contact the team or instruments (e.g., countertops). |
| Surface Barriers | Fluid-resistant materials used to cover clinical surfaces prone to contamination. |
| Precleaning | The process of cleaning a surface to remove bioburden before it is disinfected. |
| Bioburden | Blood, saliva, and other body fluids that can block disinfectants from working. |
| Disinfection | Process that kills or reduces pathogenic microorganisms on inanimate objects, but does NOT kill bacterial spores. |
| Sterilization | A validated process that destroys ALL forms of microbial life, including high numbers of bacterial spores. |
| High-Level Disinfectant / Sterilant | Destroys all microorganisms (including spores with extended time); used for heat-sensitive reusable items via immersion. |
| Intermediate-Level Disinfectant | Destroys vegetative bacteria, most fungi, viruses, and is tuberculocidal; used for clinical contact surfaces. |
| Low-Level Disinfectant | Destroys vegetative bacteria, some fungi/viruses, but is NOT tuberculocidal; used for housekeeping surfaces without visible blood. |
| Tuberculocidal | Capable of inactivating Mycobacterium tuberculosis, a key benchmark for intermediate-level disinfectants. |
| Iodophors | EPA-registered intermediate-level disinfectants containing iodine; can leave a reddish or yellow stain. |
| Synthetic Phenol Compounds | Intermediate-level disinfectants safe for metal, glass, rubber, or plastic, but can leave a residual film. |
| Sodium Hypochlorite | Commonly known as bleach; a 1:100 dilution is used for general disinfection, but it is corrosive to metals and damages fabric. |
| Alcohol | Not recommended for surface disinfection because it evaporates too quickly and fails to penetrate bioburden. |
| Glutaraldehyde | High-level disinfectant/sterilant with toxic, highly irritating fumes; items must be rinsed with sterile water after immersion. |
| Ortho-Phthalaldehyde (OPA) | High-level disinfectant that works in 12 minutes at room temperature, has little odor, but can be expensive and stain skin/plastics. |
| HVE System Maintenance | Must be flushed with a detergent or water-based disinfectant at the end of every day to reduce aerosol contamination. |
| HVE Bleach Rule | Never use sodium hypochlorite (bleach) in the HVE system, as it causes severe corrosion to metal parts. |
| CDC Carpeting Rule | Carpeting harbors bacteria/fungi and cannot be reliably disinfected; it should be avoided in operatories and labs. |
| Digital Radiography | A green infection control measure that eliminates chemical processing fluids and lead foils. |
| Green Infection Control | Measures to reduce environmental impact, including reducing waste volume, minimizing chemicals, and going paperless. |