Presentation on theme: "Presented by Riverland Community College"— Presentation transcript:
1Presented by Riverland Community College Infection Control and Bloodborne PathogensPresented by Riverland Community College
2ObjectivesAt the end of this training session, participants will be able to:Describe what laws and safety regulations cover Bloodborne PathogensList and describe the diseases that cause the greatest concerns for providers and their symptomsDescribe how to prevent disease transmissionDescribe post-exposure treatments and follow-up that may be providedDiscuss the difference between significant vs reportable exposure
3Things to Know if there is Risk of Exposure Counseling specific to exposure incident is availablePost-exposure treatments and follow-up that may be provided.If you are exposed, confidential medical evaluation is to be made immediately available to you.
4OSHA Bloodborne Pathogens Standard (29 CFR 1910.1030) OSHA’s Bloodborne Pathogens standard prescribes safeguards to protect workers against the health hazards from exposure to blood and other potentially infectious materials, and to reduce their risk from this exposure.29 CFR“Bloodborne pathogens” means pathogenic microorganisms that are present in human blood and can cause disease in humans. These pathogens include among others hepatitis B virus (HBV), which causes hepatitis B; human immunodeficiency virus (HIV), which causes AIDS; hepatitis C virus and other pathogens, such as those that cause malaria.“Other potentially infectious materials” means: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 fluids in situations where it is difficult or impossible to differentiate between bodily fluids;Any unfixed tissue or organ (other than intact skin) from a human (living or dead); andHIV-containing cell or tissue cultures, organ cultures, and HIV- or HBV-containing culture medium or other solutions; and blood, organs, or other tissues from experimental animals infected with HIV or HBV.
5Who Needs OSHA BBP Training? All employees who could be “reasonably anticipated” as the result of performing their job duties to face contact with blood and other potentially infectious materials“Good Samaritan” acts such as assisting a co-worker with a nosebleed would not be considered occupational exposureOSHA’s Bloodborne Pathogens standard, 29 CFR , does not apply to construction, agriculture or maritime.The term “reasonably anticipated” contact means potential contact as well as actual contact with blood or other potentially infectious materials.
6Employees Who May Be Exposed Physicians, nurses and emergency room personnelOrderlies, housekeeping personnel, and laundry workersDentists and other dental workersLaboratory and blood bank technologists and techniciansMaintenance workers in healthcare facilitiesStaff of nursing homes and long-term care facilitiesFirefighters/Law enforcement personnelFirst Responders/EMTs/ParamedicsMedical waste treatment employeesEmployees of funeral homes & mortuariesHome healthcare workersThe scope of the Bloodborne Pathogens standard is not limited to employees in these jobs. The hazard of exposure to infectious materials affects employees in many types of industries and is not restricted to the health care industry.
7What are Bloodborne Pathogens? Bloodborne Pathogens are disease-causing microorganisms that may be present in human blood. They may be transmitted with any exposure to blood or OPIM.Hepatitis VirusesHepatitis B (HBV)HBV ImmunizationHepatitis C VirusHuman Immunodeficiency Virus (HIV)
8Other Potentially Infectious Materials (OPIM) Cerebrospinal FluidSaliva (in dental procedures)BloodPleural FluidPericardial FluidPeritoneal FluidSemen and Vaginal SecretionsAmniotic FluidSynovial FluidAny fluid Containing visible blood.The sources of pathogens are, first of all, blood...…but it also includes other potentially infectious material, or other potentially infectious materials as defined by OSHA.
9How Exposures Occur Most common: needlesticks Cuts from other contaminated sharps (scalpels, broken glass, etc.)Contact of mucous membranes (for example, the eye, nose, mouth) or broken (cut or abraded) skin with contaminated blood
10How Exposures OccurDisease transmission is a two-way street. It is just as easy for you to infect a person with whom you come in contact as it is for that person to infect you.A pathogen is a disease-producing organism that enters the body; basically, a germ.The immune system relies heavily on the skin to keep the amount of pathogens that enter the body to a minimum.
11How Infections Occur Chain of Infection Infectious Agent Reservoir Means of ExitMode of TransmissionMeans of EntrySusceptible Host
12How Infections Occur Chain of Infection Infectious Agent Susceptible HostReservoirMeans ofExitMeans ofEntryMode ofTransmissionChain of Infection
13How Infections Occur Routes of Transmission: Direct contact Indirect contactAirborne transmissionVector-borne transmission
14Direct Contact Reservoir to port of entry. (Person to person) Touching the body fluids from an infected personKissingSexual ContactOral-FecalBlood or other bodily fluids comes in contact with any port of entry.
15Indirect ContactTouching objects that have been in contact with the body fluid of an infected personDoor knobsCountertopsEating utensilsSteering wheelWaterborne
16Airborne Transmission Breathing in droplets that became airborne when an infected person coughs or sneezesCarried by current or ventilation systems
17Airborne Transmission Large droplets that travel up to 3 feet.CoughingSneezingTalkingLands on dust or surfacesInfluenzaMeninigitisColdsRSV
18Vector-Borne Bite from an infected animal or insect Blood transfusions Organ transplant
19What are the Infection Concerns? Both patients and healthcare workers are at an increased risk of infectionPatientsweakened immune systemsinjuryHealthcare Personneldaily dutiesConsequences of infectionThe OSHA Bloodborne Pathogen Standard was introduced because of the risk of serious infection associated with blood and other potentially infectious material. In the hospital setting, both patients and healthcare workers are at a increased risk of infection. Patients are not covered by OSHA, but healthcare employees are.Patients in the hospital or long term care are at risk because their immune systems may be weak due to illness, injury or the medication they’ve been given.Workers are at risk because their daily duties may involve the possibility of exposure to blood and other potentially infectious material.Exposure to some blood-borne pathogens may result in chronic disease and possible death.
20How Infections OccurMost infectious diseases are caused by one of five types of pathogens. The most common are viruses and bacteria.VirusesBacteriaFungiProtozoaParasites
22Viruses Will use genetic make-up of host cell to replicated self. Hepatitis, Chicken Pox, HIV, Herpes, etc.Latent type of infectionCell reproduces both own and viruses genetic structure. (Herpes)Persistent InfectionHepatitis B
23Bacteria One-celled organisms Meningitis, Tuberculosis, food poisoning Divide and multiplyProduce enzymes and toxinsDamage surrounding tissueImpair the body’s ability to defend itself
24Transmission depends upon: The virulence of the pathogen.HBV vs. HIVThe length of the exposureMore time equals greater riskThe route of entryBlood to bloodMucosal tissueYour general healthHealthy & well-rested minimizes riskYour immunityMaintain your immunizations
25The Body’s Means of Fighting off Organisms Vaccinations/ImmunizationsHealthy lifestyleStrong resistanceHigh risk individualsHIV +Chronic health issuesSurgery
26The HIV virus can survive outside the host body for up to seven days in dried blood True FalseFalse--It can only live outside the body for a short time once the blood or fluid it is contained in dries. That means if the virus is directly on a surface and it dries...it will live less than 2 minutes.
27Diseases that Cause Concern Human Immunodeficiency Virus (HIV)immune systemHepatitis B Virus (HBV)liverOther PathogensThe blood-borne pathogens that OSHA is most concerned with are HIV, which attacks the immune system, and HBV, which causes chronic liver disease. Hepatitis B virus was the most concern with OSHA at the time the standard was drafted because it was the easiest to contract from a blood spill.There are obviously other pathogens in blood, as well as other pathogens to be concerned with in the CS area. Most recently, the hepatitis C virus is raising a concern because of it is so easily contracted. It is important to remember that at this point in time, OSHA recognizes HIV and HBV as the representative organisms for blood-borne pathogen concern when recommending procedures and products to use.
28Human Immunodeficiency Virus (HIV) Blood and other body fluidsAIDSno cure/no vaccineAuto-immune system suppressedVulnerable to opportunistic diseasesEnvironmental disinfectioneasy to killThe human immunodeficiency virus, or HIV, is the virus that causes AIDS.It is transmitted though direct contact with blood and other body fluids.The virus attacks the immune system, leaving the patient vulnerable to many diseases that they would normally be able to defend. There is no cure, nor vaccine for the disease.The virus itself is a lipid-enveloped retrovirus that has a high susceptibility to germicides - so it’s relatively easy to kill through environmental disinfection.
29Human Immunodeficiency Virus Symptoms Certain symptoms & conditions may be associated with HIV/AIDSFeverWeight lossSwollen lymph nodesWhite patches in mouth (thrush)Certain cancers eg. Kaposi’s sarcoma, certain lymphomasInfections eg. pneumocystis pneumonia, TB, etc.
30Hepatitis Viral Disease Turn of the century identified as 2 types Inflammation of the liverTurn of the century identified as 2 typesEnteric (food and water)Parenteral (blood and/or other bodily fluids)Currently-A, B, C, D, E , F & G
31Hepatitis A (formerly called Infectious hepatitis) Foodborne illnessVaccine preventableMore common in countries with underdeveloped sanitation systemsDoes not develop into chronic hepatitis or cirrhosisCan lead to acute liver failure and deathIn the News: outbreak in Illinois McDonaldsDuring the summer of 2009, public health officials in the Quad-City region of Illinois identified 32 confirmed cases of hepatitis A among patrons of the McDonald’s restaurant in Milan, Illinois. At least eleven people were hospitalized due to the severity of their hepatitis A symptoms. According to news reports, the hepatitis A outbreak timeline is as follows:June 17, 2009A person who works at the McDonald’s restaurant in Milan, Illinois, is diagnosed with hepatitis A.July 10, 2009 The Rock Island County Public Health Department (RICPHD) learns that five people, including two from Mercer County, have tested positive for hepatitis A.July 13, 2009 The RICPHD learns of the McDonald’s worker’s hepatitis A infection via a report delivered by the U.S. Postal Service.July 14, 2009 Representatives from RICPHD visit the Milan McDonald’s restaurant and instruct McDonald’s employees on proper hand-washing techniques to prevent the spread of hepatitis A.July 15, 2009 RICPHD becomes aware of four additional hepatitis A cases, and learns that one is a second McDonald’s employee. The Milan McDonald’s is closed for deep cleaning, and a formal notice regarding the hepatitis A outbreak is issued. All McDonald’s employees are tested for hepatitis A.July 21 and 22, 2009 Thousands of people exposed to the hepatitis A virus through the consumption of food prepared at the Milan McDonald’s restaurant receive hepatitis A vaccinations or Immune Globulin injections to prevent hepatitis A infection.July 23, 2009, the Marler Clark law firm filed a class action lawsuit against McDonald’s on behalf of all individuals who received a hepatitis A vaccination or Immune Globulin injection to prevent becoming ill with hepatitis A infection. The firm has also filed individual lawsuits on behalf of three people who became ill with hepatitis A infections after consuming food purchased from the Milan, Illinois, McDonald’s restaurant.
32The Hepatitis B virus can survive outside the host body for days in dried blood. True FalseTrue--Hepatitis B can remain stable outside the body for days or weeks, even when dry.Hepatitis B can be spread by casual contact. It can be acquired by close contact within families, or from person to person through contact with open skin lesions. The virus may possibly be spread by exposure of mucous membranes to saliva, but you cannot get it from food or water, sneezing or coughing, breastfeeding, handshakes, hugs or casual contact.
33Hepatitis B Virus (HBV) (formerly called Serum hepatitis) Parenteral Infection: blood and body fluidssalivaHighly infectiousdiluted blood 1:100,000,000viable in dried bloodincrease in sexually transmitted casesImmunization3 shotsThe hepatitis B virus, or HBV, is found in blood and other body fluids, including saliva and semen.It is highly infectious. HBV in blood diluted one to one hundred million in water may still infect. It is also viable in dried blood - dried blood on a dressing in a janitor’s closet was found to contain viable virus. The reference indicated that the amount of time it was there was unknown, but it was more than a few days. While the virus may survive drying or desiccation, it is a lipid-enveloped hepadnavirus, and highly to moderately susceptible to disinfectants.Luckily, you can be immunized with a vaccine against this organism. A series of 3 shots can protect you from a lifetime of liver problems. All people who have routine occupational exposure to blood or OPIM have the right to receive the immunization series against Hepatitis B aqta no personal expense. The standard includes temporary and part-time workers and volunteers.
34Hepatitis B Virus Symptoms LethargyLoss of appetiteFeverVomitingYellow skin & eyes (jaundice)Dark-colored urine.Light colored stoolDID YOU KNOW???It is estimated that 4.9% of all Americans have been infected with HBV
35Hepatitis C (HCV) Most common chronic bloodborne infection in the US. Transmitted through large or repeated direct exposures to blood such as: long term kidney dialysis, tattoos, sexual contact, parenteral infectionIn many cases, there are no symptoms until cirrhosis has developed.No vaccination availableCan last in dried blood up to 3 weeksThe Hepatitis C virus has been a very big concern lately, especially with needlestick and other puncture injuries.It isn’t at the level of infection that HBV is: your risk of infection is 2% from a needle-stick contaminated with an HCV positive patient; however, there is no vaccine to prevent the disease, therefore - gloving and other protective measures are paramount.This virus is a lipid enveloped flavivirus, therefore it is assumed it is relatively easy to kill with disinfectants
36Hepatitis C Symptoms Vomiting Lethargy Yellow skin & eyes (jaundice) Urine that is dark in colorLethargyLoss of appetiteAbdominal painNausea
37Hepatitis D & E Hepatitis D (Delta Virus) Hepatitis E Rare in most developed countries, and is mostly associated with intravenous drug use.Propagates only in the presence of the HBV virus.Hepatitis EFecal-oral transmission routeSeen more developing countriesoccur after heavy rainfalls because of their disruption of water supplies
38Hepatitis F & G Hepatitis F Hepatitis G Debate continues on its presenceHepatitis GSymptoms are non-existentFound in co-infections with other viruses, such as HCV and HIV
39The Relative Risks LESS MORE RISK RISK Blood transfusion (infected blood) *Sharing the toilet or showerBlood contact with gloved handsBlood contact with open woundBlood contact with intact skinOpen Mouthed KissingUnprotected SexSharing eating utinsilsSharing Drug NeedlesNeedlestickLESSRISKMORERISK* NOTE: The blood supply in the U.S. is now tested for HIV, and is considered safe.
40Reportable IncidentsIncidents that involve the failure of barrier protection (glove failure), blood or OPIM contact with intact skin or conditions preventing the use of PPEReportable Incident that must be reported to your supervisor before the end of your shift.
41Significant Exposures NeedlesticksBlood/OPIM contact with non-intact skinBlood/OPIM contact with mucosal tissueFollow your organization’s Exposure Reporting Policy.
42What to do if an exposure occurs? Wash exposed area with soap and waterFlush splashes to nose, mouth, or skin with waterIrrigate eyes with water or salineReport the exposureDirect the worker to a healthcare professionalTreatment should begin as soon as possible after exposure, preferably within 24 hours, and no later than 7 days.OSHA Office of Training and Education
43Post-Exposure Follow-Up Employer will:document routes of exposure and how exposure occurredrecord injuries from contaminated sharps in a sharps injury log, if requiredobtain consent from the source individual and the exposed employee and test blood as soon as possible after the exposure incidentprovide risk counseling and offer post-exposure protective treatment for disease when medically indicated in accordance with current U.S. Public Health Service guidelines(f)(3), (4) & (5)The requirement to establish and maintain a sharps injury log applies to any employer who is required to maintain a log of occupational injuries and illnesses under 29 CFR 1904.If the employee consents to baseline blood collection, but does not give consent at that time for HIV serologic testing, the sample must be preserved for at least 90 days.Current U.S. Public Health Service guidelines: Updated U.S. Public Health Service Guidelines for the Management of Occupational Exposure to HBV, HCV, and HIV and Recommendations for Postexposure Prophylaxis, June 29, 2001.Call the National Clinician’s Hotline at
44The Ryan White ActRequires Health Care Providers (hospitals, nursing homes, primary care facilities) to notify ALL personnel who may have been exposed to infectious/communicable diseases.
45Labels and SignsHazard communication requires that employees receive warning through labels, signs and training in order to eliminate or minimize their exposure to blood-borne pathogens. Warning labels are to be fluorescent orange or orange-red with lettering or symbols in contrasting color and include the “Biohazard” name, the name of the infectious agent, and the name and phone number of the person responsible for it.The employer also needs to ensure that all employees with occupational exposure participate in a training program in order to minimize the risk of occupational exposure. This information and training should be provided by employers to all employees at no cost and during work hours. Training must be offered at the time of initial work assignment and needs to take place at least annually thereafter.
46Labeling Regulated Waste Refers to the following categories of waste that require special handling at a minimum:Liquid or semi-liquid blood or OPIMItems contaminated with blood or OPIM & would release these substances in a liquid if compressedCaked with dried blood or OPIMContaminated sharpsPathological & microbiological wastes containing blood or OPIM
47When Labeling Regulated Waste is Necessary On containers of regulated waste or on refrigerators or freezers that are used for storageEquipment being sent to another facility for servicing or decontaminationMust be labeled with biohazard labelEven if your facility considers all of its waste to be regulated, it still must bear the label
48Biohazard LabelsBiohazard labels may be attached to bags containing potentially infectious materialsLabels must be fluorescent orange or orange-red with letters or symbols in contracting color or color-coded for your facilityAttached to any container that is used to store or transport potentially infectious materials
49Contaminated SharpsOSHA Definition—any contaminated object that can penetrate the skin, including, but not limited to, needles, scalpels, broken capillary tubes, and exposed ends of dental wires.
50Contaminated Sharps Reusable sharps Acceptable sharps containers Must be placed in a clearly labeled puncture-resistant, leakproof container asap after useAcceptable sharps containersClosablePuncture resistantLeakproof on sides & bottomLabeled or color-coded in accordance with the Standard
51Sharps ContainersMust be easily accessible to personnel and located as close to immediate area as possible.Sharps containers mounted onto walls should be 52” to 56”from the floor.Maintained in an upright positionReusable containers (those used to transport contaminated sharps for cleaning) shall not be opened, emptied, or cleaned manually which would expose employees to risk of injury
52Sharps Injury LogEmployers must maintain a sharps injury log for the recording of injuries from contaminated sharpsThe log must be maintained in a way that ensures employee privacy and must contain, at a minimum:Type and brand of device involved in the incidentLocation of the incidentDescription of the incident(h)(5)The purpose of the sharps injury log is to aid in the evaluation of devices being used in the workplace and to quickly identify problem areas in the facility. It must be reviewed at least annually during the review and update of the Exposure Control Plan.If the data are made available to other parties (e.g., supervisors, safety committees, employees), any information that could be used to identify the employee must be withheld to protect the employee’s privacy.The requirement to establish and maintain a sharps injury log applies to any employer who is required to maintain a log of occupational injuries and illnesses under 29 CFR 1904, OSHA’s recordkeeping rule. The sharps injury log must be maintained for the period required by 29 CFR
53Disinfection“You can clean without disinfecting or sterilizing but you cannot disinfect or sterilize without cleaning.”The most important thing to keep in mind is that you can clean without disinfecting or sterilizing, but you cannot disinfect or sterilize without cleaning.
54Disinfection is a Process Step 1 - CleaningIf foreign material/soil is visible (i.e., body fluids), remove by cleaning prior to disinfectionSoil can keep the disinfection process from workingStep 2 - DisinfectingDisinfection is a process that eliminates many or all microorganisms except sporesDisinfection is a process. The first step in that process is cleaning. Any foreign material or soil (including blood and body fluids), must be removed before the surface can be disinfected. Blood and other organic soils can keep the disinfection process from working by tying up the active ingredients and possibly inactivating the disinfectant.
55Universal Precautions Treat all human blood & certain body fluids as if they are known to contain HIV, HBV, HCV or other bloodborne pathogens regardless of the perceived risk of the source.
56Personal Protective Equipment Glovesblood or body fluidsmucous membranesskin with open cuts or sorescontaminated items or surfacesGown or ApronMaskDon’t Forget Eye Protection!Another way designed to protect a worker from exposure to disease is through the use of personal protective equipment, or PPE.Just as construction workers are required to wear hard hats and steel toed shoes, healthcare workers must wear gloves, gowns, aprons, masks, or eye protection when appropriate - as directed.Gloves must be worn if there is a possibility of contact with blood or body fluids,and any contaminated items or surfaces.Gowns or aprons should be worn as directed if there is a chance of soiling clothing with blood or other potentially infectious material.Masks should be worn as directed if there is a threat of airborne transmission of disease. Masks are also a good idea for healthcare workers to use if they themselves have a respiratory disease that should not be transferred to patients or coworkers.Don’t forget eye protection - the eye is an area where pathogens can penetrate through, so it’s important to wear a face shield or safety glasses/goggles.
57Preventing Disease Transmission Wash hands!if visibly soiledbefore and after restroombefore and after eatingafter taking off glovesWashing hands is one of the most significant ways to reduce infection. You should wash your hands if they are visibly soiled, before and after restroom breaks, before and after eating, and after taking off gloves......Many people think that gloves keep their hands clean. In reality, there is always a possibility of tiny pinholes that would allow organisms to get through. The inside of the glove is warm and moist, so that microorganisms grow in higher numbers than on ungloved hands...…so, always wash your hands after you remove your gloves!E.coli bagel story...
58Hand Washing Recommendations Hand Hygiene IndicationsVisibly soiled hands - traditional washHand Hygiene TechniqueTraditional HandwashWet hands first3 - 5 mL of productWash for at least 15 secondsRinseDry - use towel to turn off faucetThe new guidelines have specific recommendations for hand hygiene: for visibly soiled hands (and this picture is a HUGE exaggeration!), you need do perform a traditional handwash with soap and water.You need to wet your hands first, apply mL of the product (or whatever the manufacturer recommends), wash for at least 15 seconds, rinse thoroughly and dry thoroughly. Then you use the paper towel to turn off the faucet.
59Tips for a Traditional Wash Proper Handwashing:Wet hands BEFORE adding soapDime-sized amount of soap is plentyUse warm, not HOT waterRinse thoroughlyDry thoroughlyHandwashing technique is extremely important to protect your skin. These are a few tips for proper handwashing:You should always wet hands before adding soap - it doesn’t seem like a big deal, but it is! Compare it to using a germicide at full strength instead of diluting it - you’re going to probably see some surface damage!A dime-sized amount of soap is plenty - just one pump from most dispensers will do the job.Hot water dehydrates the skin, and rinsing all residual product off your hands is very important. The surfactants that are left behind can be very irritating when left to dry.Evaporation also contributes to drier hands, so make sure you dry them thoroughly after being wet..
60New Guideline Recommendations Hand Hygiene IndicationsIf hands are not soiled, use alcohol:Before and after glovingBefore and after patient contactintact skinnon-intact skin, wound dressings (no visible soil)between contaminated and clean body sitesThe exciting new recommendations in the guideline as everyone is aware, is that in those cases where hands are not visibly soiled, including before and after gloving, before and after patient content, and between contaminated and clean body sites - you should use a waterless alcohol product.Hand hygiene technique is a lot less complicated: Basically, you just need to apply enough product to cover the entire surface of the hand, then rub until dry. I am going to emphasize the last step as a safety reminder - it’s important to keep in mind that you’re dealing with a flammable liquid. It should only take a couple of minutes for your hands to air dry, and the potential for ignition is eliminated once that alcohol has evaporated.
61Considerations Use caution when handling items that may contain sharps Do not eat, drink, apply cosmetics or handle contact lenses in areas where exposure is likely to occurPlace soiled linen in an impermeable bagClean, disinfect or sterilize contaminated equipment between usesAs part of the OSHA Blood-borne Pathogen standard, the employer needs to determine and put into effect a written schedule for cleaning and decontamination, based upon each specific location in the facility, type of soil present, type of surface to be cleaned, and tasks and procedures being performed in that area.Contaminated sharps must be discarded and/or contained immediately in closed, puncture-resistant, leak-proof and labeled containers that are easily accessible and maintained in an upright position.Don’t eat, drink, smoke, apply cosmetics or handle contact lenses in areas where exposure is likely to occur.Contaminated laundry must be handled as little as possible and with a minimum of agitation. It must be bagged at the location where it was used and not sorted or rinsed - then labeled and color-coded for transportation.All equipment and work surfaces must be cleaned and decontaminated. The particular disinfectant used depends on the surface, soil, circumstances and location requiring decontamination. All equipment, environmental and work surfaces shall be cleaned and decontaminated with an appropriate disinfectant after completion of procedures. This is basically your day to day job...
62Blood SpillsSpills of blood or body fluids should be cleaned up promptlyUse an appropriate disinfectant (HIV and HBV effective)OSHA considers tuberculocidal agents (bleach, phenol) HIV and HBV effectiveOSHA now considers quats EPA registered as effective against HIV and HBV effectiveBlood and other potentially infectious material should be cleaned up promptly and according to OSHA Bloodborne Standards.OSHA requires that spills be disinfected with an appropriate disinfectant (i.e.. one that kills HBV and HIV).At the time the standard was introduced (1992), there were disinfectants registered effective against HIV but not HBV.This is because there was not an EPA approved test method to show effectiveness against HBV.Because of this, OSHA felt the safest approach was to require the use of a Tuberculocidal disinfectant since TB was considered one of the most difficult organisms to kill.Since that time EPA has reviewed data and approved select quaternary disinfectants as HBV effective. This means that quaternary disinfectants with EPA claims against HBV and HIV are appropriate for cleanup of blood or other potentially infectious material spill cleanup. These quats were tested using an endangered species, so there were only a few registrations granted. As a result, many companies subregistered these products.The EPA has recently accepted a new model for testing HBV. Many companies are now involved in scheduling this testing, and we’ll probably see many more cost-effective HBV quats in the market a year from now. *This presentation was created in November, 2000.
63Descending Order of Resistance Prions (vCJD)Bacterial spores Not High Sterilization(Bacillus, Clostridium spp.) NumbersMycobacterium Intermediate High-Level(M. tuberculosis) Disinfection DisinfectionNonlipid orsmall viruses Check(Poliovirus, HAV) LabelFungi(Candida sp.)Vegetative bacteria Low-Level(S. aureus, MRSA, VRE) DisinfectionLipid or medium-sized viruses(Herpes simplex, HBV, HIV)Infection control professionals have actually categorized levels of disinfection.This chart shows the relative resistance of microorganisms to disinfectants.Low level disinfectants (like most quats) are those disinfectants which will kill vegetative bacteria and lipid viruses - in most cases they also kill select fungi and non lipid viruses (you need to read the label)Notice that the two representative organisms for blood-borne pathogens, HIV and HBV - are relatively easy to kill with a low level disinfectant.Intermediate level disinfectants (like most phenolics) will kill Mycobacterium (or TB) on down - it should be noted that there are some exceptions where products that kill Mycobacterium will not kill some non-lipid viruses or fungiHigh level disinfectants (such as glutaraldehydes) kill Mycobacterium and low numbers of bacterial sporesSterilants (such as glutaraldehydes at longer time points) kill spores on down.Prions are basically at the top of the chart - very difficult to eliminate with traditional chemistries alone.It is important to note that despite the high level of efficacy, glutaraldehydes are only used for surgical instruments - they are not hard surface disinfectants.
64Choosing a Disinfectant for Blood Spills Sodium Hypochlorite (bleach)PhenolicHBV Effective Quaternary Ammonium CompoundAs seen by the previous slide, an appropriate disinfectant for blood spills is one that is HIV and HBV effective.Sodium hypochlorite, or bleach, has a long history of disinfection. Because of this history, it’s effectiveness is well known. A 1:10 dilution of a 5.25% sodium hypochlorite concentrate is recommended for the disinfection of blood spills.Phenolics are categorized as intermediate level disinfectants, meaning that they are tuberculocidal. Because of this higher level of disinfectant efficacy, phenolics are appropriate disinfectants for the clean up of blood spills.HBV Quaternaries are categorized as low-level disinfectants. The HBV claims set these products apart from other available quaternary formulas.Each choice has pros and cons - the facility needs to decide which characteristics are important to them.
65Sodium Hypochlorite Pros Cons history of disinfection economical surface compatibilitystabilitysafetycleaning abilitySodium hypochlorite, as I mentioned in the previous slide, has a great history of disinfection - it’s been used for years, and we are well aware of its efficacy against microorganisms.It is a very economical chemical to buy - there’s really nothing fancy in the household or industrial bleach that is purchased.Disadvantages to using bleach, as many of you are aware, includes surface damage - it can bleach out colors on plastics and corrode metals.Bleach is also unstable in solution - the activity of a diluted solution of bleach diminishes very quickly - especially in the presence of organic soil, such as blood.There are safety issues with using bleach. Beyond the fumes and irritation associated with using bleach, if it is accidentally combined with other chemicals such as ammonia or acid, toxic fumes may be given off.Bleach doesn’t have any surfactants, so it’s not a good cleaner. You need to definitely clean the surface before disinfecting with bleach.
66Phenol Pros Cons broad kill range, including TB cleaning ability resistance to hard water and organic soilConssurface compatibilitytoxicityPhenolics have a very broad kill range, including Mycobacterium, the organism that causes tuberculosis.They have excellent cleaning ability - surfactants are typically built into the formula. They are resistant to both the minerals in hard water and organic soil such as blood and other body fluids. Essentially, they are very stable once diluted.Disadvantages to using phenol include surface incompatibility - there are some plastics that are degraded by phenolic products (the plastic will discolor and become brittle).Phenol has also raised some toxicity concerns to the environment as well as to people. In California, a certain chemical form of phenol cannot be used, and many facilities monitor their water supply for high levels of phenol in their waste water.
67HBV Effective Quaternary Ammonium Compounds Proscleaning abilitybroad spectrum of killresistance to hard water and organic soilsurface compatibilitysafetyConsnot tuberculocidal, unless combined with another chemicalHBV effective quaternary ammonium compounds have many advantages. Quats have great cleaning ability because quaternaries are surfactants as well as antimicrobials. They have a broad spectrum of kill, and higher generations of quats are resistant to hard water and organic soil interference. They are relatively compatible with almost any surface, and they are very safe to the end user when the label directions are followed.Quats are not tuberculocidal, unless they are combined with another chemical, such as alcohol or another solvent.
68Final Points to Remember Basic Steps to Prevent Infectionuse appropriate cleaning and disinfectant procedureswash your hands thoroughlypractice good skin careuse personal protective equipmentHBV Vaccinationknow the exposure control planFinally, there are basic steps to remember to prevent infection:Use appropriate cleaning and disinfectant procedures. For blood spills, include the use of a product that is effective against HIV and HBV, or at least effective against TB.Wash your hands. Handwashing is the single most important factor in preventing infection.Practice good skin care. Your skin is your best defense against infection. Protect it by keeping it moisturized and using barriers as directed.Use personal protective equipment. Gloves are very important in handling potentially infectious material, and masks and gowns may be used in extreme cases where the possibility of infection is unusually high.The HBV vaccination is an important way to prevent a serious and deadly disease. It is highly recommended for people in occupations with any possibility of blood-borne pathogen exposure.Knowing your facility’s exposure control plan is very important in the prevention of blood-borne pathogen exposure and knowing what to do if an exposure occurs. Knowledge of this plan can mean the difference between staying healthy or becoming infected with a deadly disease.
69TuberculosisAlthough Tuburbulosis is not a bloodborne pathogen, it has been added to the training because many employees with occupational exposure to bloodborne pathogens may potentially have occupational exposure to persons with TB disease.
70TuberculosisInfectious disease cause by the bacterium, Mycobacterium tuberculosis.Spread by airborne droplets, “droplet nuclei,” which may be generated when a person with TB disease coughs, sneezes, speaks or sings.TB infection occurs when a susceptible person inhales droplet nuclei containing the bacteria and becomes established in the body.There are various symptoms that may indicate exposure to TB. These include: lethargy, weakness, fatigue, fever, weight loss, persistent productive cough, coughing up blood, loss of appetite, and night sweats.The Mantoux tuberculin skin test is used to detect TB infection. Positive result indicate TB infection. Other tests are needed to confirm TB disease.TB is largely a preventable disease. Several drugs are used to treat TB. The most common drugs are isoniazid (INH) and rifampin.
71OccurrenceNearly one-third of the world’s population is infected with TB, which kills almost 3 million people per year.In the mid-1980s, a resurgence of outbreaks in the U.S. brought renewed attention to TB. Since 1985, the incidence of TB in the general population has increased 14% reversing a 30 year downward trend. In 1993, over 25,000 new cases of TB were reported in the U.S. During 1994 and 1995, however, there was a decrease in TB cases in the U.S. likely due to increased awareness and efforts in prevention and control of TB.
72Why Is TB Increasing? Multiple contributing factors: Homelessness Intravenous drug useOvercrowding in institutional settingsHIV infectionDrug-resistant strains of TBReduced TB control and treatment resourcesImmigration from high TB prevalence areasThese factors contribute to the growing increase in TB cases.
73Where Is TB Found in the Workplace? Healthcare FacilitiesCorrectional InstitutionsHomeless SheltersLong-term Care Facilities for the ElderlyDrug Treatment CentersThe Centers for Disease Control and Prevention (CDC) has identified these workplaces as having high incidences of TB.Health care facilities include hospitals where patients with confirmed or suspect TB are treated or to which they are transported.Coverage of non-health care settings (doctors’ offices, clinics, etc.) include only personnel present during performance of high hazard procedures on suspect or active TB patients. Dental health care personnel are covered only if they treat suspect or active patients in a hospital, correctional facility, or as part of their practice.
74What Does it Mean to You?Your employer must provide training in recognizing high-risk patients and procedures.Employers must provide fit-tested and N95 masks for all employees.Employees must receive free skin test (Mantoux test) upon hiring and at least annually thereafter.
75What Does it Mean to You?Employer must provide evaluation and management of symptomatic employees with history of positive skin tests.Employer must maintain complete records of all training, skin tests and exposures.
76Tuberculosis signs and symptoms Persistent productive cough (lasting 2 weeks or more)Weight lossLoss of appetiteNight sweats and/or feverGeneral weakness or lethargyHemoptysis (coughing up blood)
77Tuberculosis Screening Healthcare Workers have increased risk of TBFrequency of Screening is dependent on the number of active cases within facility
78TB Skin Test (Mantoux)Injection of purified protein derivative (PPD) under skinInjection is then checked for reaction in 48 to 72 hours
79TB and Respiratory Protection The primary means to control occupational diseases caused by breathing contaminated air is through the use of feasible engineering controls such as enclosures, confinement of operations, ventilation or substitution of less toxic materials.When these controls are not feasible, or while they are being instituted, appropriate respirators shall be used.Respirators shall be provided by the employer when such: equipment is necessary to protect the health of the employee and equipment is applicable and suitable for the purpose intended.
80When to Wear the Respirator (N95 masks) When entering a TB isolation areaDuring contact with a patient with suspected or confirmed active TBDuring high risk procedures on high risk patient groupsThe minimal acceptable level of respiratory protection for TB is the Type 95 respirator. NIOSH respirator certification requirements are contained in 42 CFR Part 84.High risk procedures: characterized by potential to generate airborne secretions; aerosolized medication treatment; bronchoscopy; sputum induction; endotracheal intubation and suctioning; and autopsies conducted in hospitals.A respirator may be re-used by the same person until it becomes wet or damaged.
81Respirator Limitations Do not wear a respirator unless clearedDo not put respirator on patientN95 masks or H.E.P.A. respirators do not protect from hazardous chemicalsDo not wear in oxygen deficient atmosphereDo not share respirators
82Accident Prevention Signs and Tags In accordance with (f)(8), a warning shall be posted outside the respiratory isolation or treatment room or a message referring one to the nursing station for instruction may be posted.(f)(4) requires that a signal word or biological hazard symbol may be presented as well as a major message.Warning signs must be posted on respiratory isolation or treatment rooms stating “pulmonary isolation,” “respiratory isolation,” or “AFB isolation.” the sign must state specifically the precautions required to interact with patients.
83Accident Prevention Signs and Tags (Continued) Employers are also required to use biological hazard tags on air transport components which identify TB hazards to employees associated with working on air systems that transport contaminated air.