Cleaning is important for infection control – particularly in work areas – because deposits of dust, soil and microbes on surfaces can transmit infection. Contaminated areas such as operating rooms or isolation rooms must be cleaned after each session, and spot cleaned after each case or thoroughly cleaned as necessary. Show
The following basic principles should be followed:
Cleaning – specific proceduresSurface cleaningFloors in hospitals and day-care facilities should be cleaned daily or, as necessary, with a vacuum cleaner fitted with a particulate-retaining filter. The filter should be changed in accordance with the manufacturer’s instructions. The exhaust air should be directed away from the floor to avoid dust dispersal. A ducted vacuum cleaning system can also be used, as long as safe venting of the exhaust air is ensured. Damp dusting using a lint-free cloth is essential. Brooms disperse dust and bacteria into the air, and should not be used in patient or clinical areas. Dust-retaining mops, which are specially treated or manufactured to attract and retain dust particles, do not increase airborne counts as much as ordinary brooms and remove more dust from surfaces. However, brooms and dust-retaining mops should not be used in clinical areas where there is a high risk of infection associated with dust (for example, burns units). The procedure for routine surface cleaning is as follows:
Specialised areasIsolation rooms and ensuite bathrooms should be cleaned at least twice daily, depending on the type of microorganism. Operating rooms and day procedure rooms, including endoscopy rooms, should be cleaned after each operating session and when visibly soiled. Thorough cleaning of the operating suite should be performed daily in addition to the cleaning performed after each operating session. Obstetric areas, particularly delivery suites, should be cleaned after each delivery, when visibly soiled and at least daily. Oncology areas should be cleaned twice daily. Sterilising processing departments should be cleaned at least twice daily and when visibly soiled. Wet areasThe following should be cleaned at least daily and more frequently as required:
Walls and fittingsWalls and screens should be cleaned quarterly or if visibly soiled. Blinds and curtains should be cleaned quarterly or if visibly soiled. Carpets should be vacuumed daily and other floor surfaces washed daily and when soiled. Bed and examination screens should be changed weekly and when visibly soiled. Cleaning Creutzfeldt-Jakob disease infectious agentsSpills of central nervous system tissue or cerebrospinal fluid should be absorbed with paper towels and disposed of by incineration. The surface should then be soaked with one molar sodium hydroxide or 2.0–2.5 per cent sodium hypochlorite, left for 1 hour and cleaned again with paper towels that are disposed of by incineration. Cleaning other infectious disease agentsSpills of blood or other body fluids and tissues should be cleaned using standard spills management procedures. PPE used when cleaning contaminated surfaces should be incinerated after use. Reusable eye protection should be cleaned as above. Maintenance of cleaning equipmentCleaning items (including solutions, water, buckets, cleaning cloths and mop heads) should be changed after each use. They should also be changed immediately following the cleaning of blood or body substance spills. These items should be washed in detergent and warm water, rinsed and stored dry between uses. Mops with detachable heads should be laundered between uses. Spills of laboratory cultures of human pathogensSpills of laboratory cultures should be absorbed with paper towels and disposed of as clinical waste. The contaminated surfaces should be treated with 2.0–2.5 per cent sodium hypochlorite, left for 1 hour and cleaned again with paper towels that are disposed of as clinical waste. Laboratories should also refer to AS/NZS 2243.3:2002: Safety in laboratories – microbiological aspects and containment facilities. Waste disposalAll healthcare facilities should have policies and procedures in place for the correct management of all waste generated. The Environmental Protection Authority (EPA) has clear guidelines on how waste should be managed. The National Health and Medical Research Council (NHMRC) also has guidelines on the management of waste generated in healthcare facilities. Waste is classified into three main groups of waste:
All waste should be stored in secure areas until collected. Waste disposal companies licensed with the EPA will collect all clinical and pharmaceutical waste for disposal in specialised waste disposal facilities, which are also licensed by the EPA. Waste should be removed from clinical areas at least three times each day and more frequently as needed, such as from specialised areas. Waste bags should be tied before removing from the area. General waste disposalPlace in general waste bin for removal. Clinical waste disposalPlace in biohazard bags as soon as possible. Biohazard bags have a biohazard symbol and are currently coloured yellow. Single-use sharps should be placed (by the user) into a sharps container that meets the Australian and New Zealand Standards AS 4031:1992 and AS/NZS 4261:1994. Pharmaceutical waste disposalWhen uncertain about how to dispose of leftover pharmaceuticals, they should be returned to pharmacy for correct disposal. Most disinfectants can be disposed of through the sewer system by running cold water into the sink before pouring the disinfectant into the sink. Leaving the cold water running for a few moments after the disinfectant has been disposed of dilutes the disinfectant.
In this section of the NCLEX-RN examination, you will be expected to demonstrate your knowledge and skills of handling hazardous and infectious materials in order to:
Hazardous materials are defined as those things that are not biological but still remain hazardous to human beings including patients and staff. Examples of hazardous materials are chemicals and radiation. The US Occupational Safety and Health Administration mandates that information about all hazardous materials is readily accessible to workers including those who work in the health care environment. Information about hazardous materials is found on Material Safety Data Sheets which are published and distributed to the users of their products to fulfill the mandates of OSHA and to protect workers. Material Safety Data Sheets (MSDS) include the name of the product, information about the product's risks, measures, such as washing the skin, that must be taken when a person has been exposed to some risk relating to the product and information about the procedures for using, handling, disposing of and storing the particular product. Biohazardous waste is defined as biological waste that can be hazardous to humans. Items such as sharps and bed linens that are contaminated with blood or other bodily fluids, such as feces, are considered biohazardous medical waste. The careful handling and disposal of all hazardous materials protects staff, clients, and visitors from harm. Biohazardous materials are heavily regulated at the national, state and local levels. All health care facilities, therefore, are legally mandated to have complete and appropriate policies and procedures relating to the labelling, storage, use and disposal of biohazardous, or biomedical, materials. Biohazardous materials place clients, staff and visitors at risk for exposures to bloodborne pathogens and pathogens transmitted with bodily fluids. Flammable and Combustible MaterialsExamples of some of the flammable and combustible materials that are commonly used within health care settings and facilities are medical gases, such as oxygen and nitrous oxide, flammable and combustible liquids such as those contained in some cleaning fluids and aerosol cans. Following Procedures for Handling Biohazardous MaterialsBiohazardous materials threats can be decreased and eliminated with a combination of administrative controls, work related controls and engineering controls. Established policies and procedures are examples of administrative controls to decrease the dangers associated with biohazardous materials risk; the utilization of proper and safe practices such as handwashing is an example of a work related control that decreases the threats associated with biohazardous materials; and engineering controls aim to decrease the dangers associated with biohazardous materials and these controls include such things like the selection of and placement of impervious red containers in all client rooms to collect disposable, contaminated sharps. Some of the other preventive measures relating to biohazardous exposures include:
The U.S. Environmental Protection Agency mandates the safe disposal of needles, syringes and other sharps in all areas of the community, in addition to their proper and safe disposal by health care facilities. The proper and safe disposal of biohazardous material in the community includes:
Following Procedures for Handling Flammable and Combustible MaterialsFlammable and combustible medical gases can be stored in individual canisters or provided to the client care area with a centralized medical gas delivery system. Emergency shut off valves are mandated for centralized medical gas delivery system in the case of an emergency. Medical gas containers must be designed, constructed, and labeled according to OSHA regulations. The following color labels are used for the following gas canisters.
Oxygen SafetyOxygen safety in the health care setting and within the home environment includes the use of a "No Smoking" signs, avoiding all synthetic fibers and fabrics near the oxygen because fabrics and fibers other than cotton can create static electricity, and not using any flammable liquids like acetone near the oxygen source. In the health care facility and also within the home oxygen canisters must be safely secured and transported. Educating and Demonstrating Safe Handling Techniques to Staff and ClientsThe registered nurse, as an educator, must assess the learning needs of clients and staff members in terms of their ability and competency related to the safe handling and management of biohazardous materials and materials that are flammable or combustible. For example, clients and staff should have a thorough understanding of and knowledge about types of things that are considered biohazardous and they should also demonstrate the proper, safe and correct techniques related to the correct handling and disposal of sharps and other biohazardous waste. Ensuring the Safe Implementation of Internal and External Radiation TherapyRadiation therapy can be broadly categorized as external and internal radiation therapy. Radiation safety is based on the three safety principles of time, distance and shielding. In other words, the risk of exposure to internal and external radiation can be decreased when the nurse, and other health care personnel such as an X ray technician, minimize and decrease the amount of time that they are exposed to and in close proximity with radiation; they must also maximize the distance between themselves and the source of the radiation, and, they must also shield themselves from the radiation using things like a lead apron and gloves when they are near the source of radiation. The risk for exposures to radiation decreases when the duration of the time exposed to the radiation is decreased and when the distance from the radiation and the shielding is maximized. External ionizing radiation is used for diagnostic testing and also for therapeutic care. For example, a chest x ray uses radiation for diagnosis and therapeutic external radiation, sometimes referred to as teletherapy, is done by using a linear accelerator that delivers electron and gamma ionizing radiation for a minute or so to treat and reduce the size of a tumor. Therapeutic internal radiation, which is also referred to as brachytherapy, internal radiation, interstitial radiation and intracavity radiation, is a therapeutic procedure that entails the internal placement of some radioactive material into or near the client's tumor. Therapeutic internal radiation entails the delivery of high doses of radiation using a needle, wire or radioactive seed. Brachytherapy is most often delivered to clients who are affected with tumor and cancer of the prostate, lungs, esophagus, cervix, endometrium, rectum, breast, head and neck. Special radiation precautions are initiated when a client is receiving brachytherapy in order to protect visitors and health care staff from the harmful effects of the radiation. Some of these special internal radiation precautions include:
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