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Proper Management of Infectious Waste
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Waste Management
Must conforms to
• Federal
• State
• Local regulations
And
• Personnel and
financial resources
And
• Evolving technologies
• Emerging diseases
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Medical Waste : History in the US
• EPA played a central role in development of medical waste regulation during late 1980s
• Congress and EPA enacted the Medical Waste Tracking Act(MWTA)
• Identified which wastes would be regulated
• Established a cradle-to-grave tracking system
• Required management standards for segregation, packaging, labeling, and storage of the waste
• Established record-keeping requirements
• Defined penalties that could be imposed for mismanagement
http://www.hercenter.org/rmw/rmwoverview.cfm
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Medical Waste : History in the US
Lesson learned from MWTA
• The disease-causing potential of medical waste is greatest at the point of generation and tapers off after that point.
• The risk to the general public of disease caused by exposure to medical waste is likely to be much lower than the risk for the occupationally exposed individual.
• Medical waste could therefore be considered more of an occupational concern than an environmental concern affecting the general public
http://www.hercenter.org/rmw/rmwoverview.cfm
Medical Waste : History in the US
• EPA no longer plays a central role
• The states and other federal agencies (ex. EPA, OSHA, DOT, CDC, JCAHO, etc) have taken on that responsibility
• Each with different approach or need
• Paucity of scientific evidence
• Leading to different practice
• ICPs must recognized which regulations are applicable for their setting and remain current
http://www.hercenter.org/rmw/rmwoverview.cfm
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Comparison of Federal Waste Definition
Terminology
• Hospital waste : All waste, biologic or nonbiologic, that is discarded and not intended for further use
• Medical waste : Materials generated as a result of patient diagnosis, immunization, or treatment, such as soiled dressings or intravenous tubing.
• Infectious waste : Portion of medical waste that could potentially transmit an infectious disease.
• Congress and the EPA used the term regulated medical waste rather than infectious waste in deference to the remote possibility of disease transmission associated with this waste
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Regulated medical waste : Definition
• Also known as ‘biohazardous’ waste, ‘biomedical’ waste or 'infectious medical’ waste
• Waste that may be contaminated by blood, body fluids or other potentially infectious materials, thus posing a significant risk of transmitting infection
• Responsible agencies define waste as infectious when it is suspected to contain pathogens in sufficient number to cause disease
• This subjective definition result in conflicting opinions
Type of Regulated medical waste
The following six medical wastes are commonly regulated
• Pathology and Anatomy Wastes
• Human blood and blood products
• Microbiological Waste (cultures and stocks of infectious agents)
• Sharps
• Isolation Wastes (Wastes from Highly Communicable Diseases)
• Animal Waste
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Pathological waste
• Subcategory of infectious waste, but is often classified separately
• Tissues, organs, body parts, blood, body fluids and other waste from surgery and autopsies on patients with infectious diseases
• Human fetuses and infected animal carcasses
• May include healthy body parts that have been removed during a medical procedure or produced during medical research
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WHO-recommended segregation scheme
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Waste minimization :The Waste Management Hierarchy
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Interim (short-term) storage in medical departments
• Should be stored in utility rooms
• Designated location near to medical area but away from patients and public access (if utility rooms not available)
• Another possibility is a closed container stationed indoors, within or close to a medical area
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Onsite transport of waste
• Should take place during less busy times
• Set routes should be used to prevent exposure
• Regular transport routes and collection times
• Should use separate floors, stairways or elevators as far as possible
• Transport staff should wear adequate personal protective equipment
• Transprot hazardous and non-hazardous separately
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Transport trolleys
• No sharp edges
• Labelled and dedicated to a particular waste type
• Easy to push and pull
• Easy to load and unload
• Easy to clean
• Not be too high
• Secured with a lock (for hazardous waste)
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Offsite transport of waste : The carriage of health-care waste on the public streets
• Drivers should have appropriate training about risks and handling of hazardous waste
• Vehicle should fulfil several design criteria
• Transport documentation should be prepared and carried by the driver
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Examples of Healthcare Waste
Examples of Healthcare Waste
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Examples of Healthcare Waste
Management of Specific Infectious Wastes
Sharps Waste
• Sharps are items that can cause cuts or puncture wounds, including:
• needles, hypodermic needles, scalpel and other blades, knives, infusion sets, saws, broken glass, and pipettes
• Whether or not they are infected, sharps are considered as highly hazardous health care waste
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Sharps Waste Management
Sharps collection
• Sharps containers should be readily accessible in areas where sharps are used
• Sharps containers should only be filled up ¾ full
Handling sharps containers
• Check all sides for any holes or protruding needles before lifting the container
• If there are holes in the container, carefully place the container inside a larger puncture-resistant container
• Always ensure new container is available before removing the old one
Options for Sharps Waste Treatment
• Autoclaving followed by shredding of sterilized sharps waste to prevent needle stick injuries
• Autoclaving presents an opportunity for recovery and re-melting of sterilized plastic and metal parts
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Options for Sharps Waste Treatment
Devices for needle destruction
• Needle melters
• needle is melted and often the plastic nub of the syringe is cut
• syringes still need to be disinfected
• Needle cutters
• needle is cut manually and collected in a container
• some needle containers may contain a chemical disinfectant
• syringes are disinfected either by chemical disinfection, autoclaving, or microwaving
• disinfected syringes can be shredded and re-melted
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Is this considered to be “Infectious waste”?
• Blood-tainted waste (materials with minor blood contamination that, if squeezed, would not drip even one drop of blood or other potentially infectious material
• Waste including excreta and other materials that have been in contact with patients infected with in isolation wards ( ex. Non-bloody diapers)
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What is not RMW?
• In some states, ‘saturated’ typically refers back to the OSHA blood borne pathogen standard, referring to “contaminated items that would release blood or other potentially
infectious materials in a liquid or semi-liquid state if compressed”.
• It would be a misinterpretation is to assume that any medical product that comes into contact with blood, body fluids or other potentially infectious materials, no matter how minor the contact, automatically becomes RMW.
http://www.hercenter.org/rmw/rmwoverview.cfm
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Infectious Medical Waste
Pathology and Anatomy Wastes
• Pathological wastes : typically samples of tissues - very small tissues sections and body material derived from biopsies or surgical procedures that are then examined in the lab.
• Anatomical wastes : typically distinguished as recognizable human organs, tissue and body parts � may require special treatment under some state regulations
Some states do not consider hair, teeth and nails to be
pathological/anatomical waste.
http://www.hercenter.org/rmw/rmwoverview.cfm
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Isolation Wastes
• Wastes from Highly Communicable Diseases
• Biological waste and discarded materials contaminated with blood, excretion, exudates or secretion from humans or animals who are isolated to protect others from highly communicable diseases (Lassa fever virus, Marburg virus, monkey pox virus, Ebola virus and others (see list in Table 27- CDC)
http://www.hercenter.org/rmw/rmwoverview.cfm
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