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Methods of Exposure ControlCertain procedures must be followed and tools must be used to keep employees safe from exposure to infectious diseases found in blood, such as Hepatitis B Virus, Human Immunodeficiency Virus, and Hepatitis C Virus. These are explained in detail in the following pages. Here is a list of the general topic headings:
Universal PrecautionsUniversal Precautions is a term that means a certain "mindset" or "attitude" toward other peoples' blood or body fluids. If all "at risk" employees adopt this way of thinking, chances are good that they will consistently act in a safe manner when working with human body fluids. This new attitude can be summarized as follows:
Engineering ControlsEngineering controls are devices and tools that prevent exposure to health hazards. These sorts of safety controls shall be used, in conjunction with Work Practice Controls, to eliminate or minimize employee exposure. These controls are extremely important, as they are the best methods of preventing exposure. These devices/equipment must be inspected and maintained on a regular basis by the Implementation Coordinator or designee. Worn parts and equipment must be replaced as soon as indicated through the inspection process. Here are some common engineering controls used to protect employees from bloodborne pathogens: Handwashing facilities:Each department shall provide readily accessible handwashing facilities. This means that there must be a facility to supply adequate running water, soap, and single-use towels or hot-air drying machines. Alternate Handwashing Devices:When running water handwashing facilities are not feasible, the department shall provide either an appropriate antiseptic hand cleanser with clean cloth/paper towels OR antiseptic towelettes. Needle Safety Devices:Departments using medical sharps must make all reasonable attempts to implement the use of these safety devices, instead of traditional sharps. There are many new products on the market that are designed to prevent needle-stick-injuries. Here are some examples:
Three examples of safety syringes Desirable features in Needle Safety Devices:
Sharps Containers:Proper containers for storage of contaminated sharps must be provided by the departments. These containers must meet the following description:
Splash Guards:Laboratory equipment that can potentially vaporize or splash blood should be equipped with a splashguard or similar protective device. Resuscitation Masks:Resuscitation masks must be made available to all First Responders. These devices prevent fluid exchange during the administration of Cardiopulmonary Resuscitation. Biosafety Cabinets:Biosafety cabinets are used in biological laboratories across campus whenever the possibility of exposure to airborne pathogens is present. Download the Department-Specific Information Sheet for Work Practice ControlsWork practice controls are procedures that employees need to follow in order to keep themselves safe. These required procedures are to be followed by all "at risk" employees and must be enforced by all departments. Hand/Skin WashingIt is extremely important that all at-risk employees follow strict hand/skin washing procedures at the following times:
Hands and other skin areas must be washed with soap and water OR antiseptic cleanser (in the absence of water). Mucous membranes must be flushed with copious amounts of water. (at least 15 minutes of flushing) When an antiseptic cleanser or towlette is used, washing with water and soap should follow as soon as possible. Sharps HandlingWhenever a needle or other sharp device is exposed, injuries can occur. Data from show that approximately 38% of percutaneous injuries occur during use and 42% occur after use and before disposal. Causes of percutaneous injuries In addition to risks related to device characteristics, needlestick injuries have been related to certain work practices such as
If recapping cannot be avoided, it must be accomplished through the use of a mechanical device, such as forceps. Also, the one-hand scoop method is allowed, if done safely. Minimizing SplashingAll procedures involving blood or other potentially infectious materials must be performed in such a manner as to minimize splashing, spraying, spattering, and generation of droplets. Avoiding Ingestion.
Dealing with Contaminated EquipmentThe following procedures must be followed when having potentially contaminated equipment serviced:
Download the Department-Specific Information Sheet for Personal Protective EquipmentGeneral:Where occupational exposure remains after the implementation of Engineering and Work Practice Controls, Personal Protective Equipment (PPE) must also be used. Departments shall provide, at no cost to the employee, appropriate PPE including, but not limited to:
PPE is considered appropriate if it is needed for, and is capable of, preventing blood or other fluids from passing through to the employee's clothing, skin or mucous membranes. Departments must complete a formal PPE hazard assessment to determine and document what PPE must be provided and used for hazard exposures. Departments must ensure proper use, accessibility, cleaning, disposal, repair and replacement of PPE. Employees must remove PPE before leaving the work area or whenever the PPE has become saturated with blood or other potentially infectious materials. Used PPE must be placed in an appropriately designated area or container for storage, washing, decontamination, or disposal. Gloves:Gloves must be worn when it can be reasonably anticipated that the employee may have hand contact with:
Or when:
Guidelines for Glove Use:
Face and Eye ProtectionMasks, goggles, glasses, and face shields are to be worn whenever splashes, spray, spatter, or droplets of blood or other potentially infectious materials may be generated and eye, nose or mouth contamination can be reasonably anticipated. Body ProtectionGowns, aprons, lab coats, clinic jackets, and other protective body clothing are to be worn in occupational exposure situations when appropriate. The type and characteristics of the PPE will depend upon the task and degree of exposure anticipated. HousekeepingAll worksites are to be maintained in clean and sanitary conditions at all times. To meet the OSHA regulatory requirements, each work area covered by this program must establish a written cleaning schedule. All such schedules should be included in this manual, following this section. HOW?Following is a table of Cleaning/Reprocessing methods recommended by the Centers for Disease Control (CDC). Decontamination methods can be selected according to that information. WHEN?Decontamination/Cleaning of surfaces and equipment must be performed at the following times:
WHAT?The following are surfaces that are likely to need decontamination:
Other Notes on Housekeeping:
Cleaning/Decontamination Methods
Laundry PracticesHandling:
Storage:
Transportation:
Labels and SignsLables:What Is A Proper Label?
What Should Be Labeled?
Signs:Departments must post signs at the entrance to HIV/HBV research laboratories. These signs must be color-coded and contain the following information:
What is the proper PPE for splashing blood?When splashes, sprays, splatters, or droplets of blood or OPIM pose a hazard to the eyes, nose or mouth, then masks in conjunction with eye protection (such as goggles or glasses with solid side shields) or chin-length face shields must be worn.
What PPE should be worn when there is a reasonable chance of exposure?The Bloodborne Pathogens standard (29 CFR 1910.1030) and CDC's recommended standard precautions both include personal protective equipment, such as gloves, gowns, masks, eye protection (e.g., goggles), and face shields, to protect workers from exposure to infectious diseases.
What PPE is used to prevent cross infection?Coveralls, gowns, hoods, masks, goggles and face shields, among others, are used to prevent skin and mucous membranes from becoming contaminated and respirators are used to prevent inhalation. Depending on the transmission route and the specifics of the infection, different types of PPE are recommended.
What are considered potentially infectious materials?Other potentially infectious materials (OPIM) means: (1) The following human body fluids: semen, vaginal secretions, cerebrospinal fluid, synovial fluid, pleural fluid, pericardial fluid, peritoneal fluid, amniotic fluid, saliva in dental procedures, any body fluid that is visibly contaminated with blood, and all body ...
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