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38 Cards in this Set
- Front
- Back
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Infection
- ___ is entry into the body of an infectious agent (microorganism) that then multiplies and causes tissue damage - ___ are microorganisms capable of causing disease - some microorganisms produce ___ and others release ___ - infection may result in ___ and ___ |
- infection
- pathogens - toxins and endotoxins - illness and disease |
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Endotoxins
- found in the cell ___ of gram ___ bacteria - are released when the cell ___ - they stimulate ___, ___, ___, and ___ |
- cell wall , gram negative
- ruptures - fever, inflammation, hypotension, changes in blood clotting |
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Identify 7 practices and/or invasive procedures that make the patient susceptible to nosocomial infections
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- lack of handwashing between patient contacts
- improper perineal hygiene (UTI w/ E. coli) - Foley catheter - IV's - Cardiac catheterization - NG tube - mechanical ventiliation (endotracheal tube) |
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Infection
- a ___ infection is in a body part - a ___ infection involves the whole body |
- local
- systemic |
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Multi Drug Resistant Organisms (MDRO's)
- these organisms can resist the effects of ___ - MDRO's are caused by ___ and ___ - 2 common types of MDRO's are ___ and ___ |
- antibiotics
- doctors presecribing antibiotics when they are not needed , not taking antibiotics for the length of time prescribed - Methicillin resistant staphlococcus aureaus (MRSA) , vancomycin resistant enterococcus (VRE) |
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Prions
- ___ particles that lack ___ and are not inactivated by usual procedures for destroying viruses - do not trigger an ___ - causes degenerative ___ disease such as varient ___ disease |
- protein , nucleic acids
- immune response - neurologic , Creutzfelt-Jacob disease (mad cow) |
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Immune Response
- a ___ of the body to substances interpreted as ___ - the immune system is ___ to the type of invador - the body will produce ___ once it is exposed to a microorganism, in this way, ___ immunity occurs - as microorganism is known as a ___ |
- reaction , foreign
- specific - antibodies , naturally acquired immunity - antigens |
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Immunity
- ___ : once exposed to a microorganism the body will produce antibodies against the invader (ex: normal body reation) - ___ : occurs when a person is given an antitoxin or antiserum containing antibodies or antitoxins that protects the person from the current invasion; temporary protection w/ antibodies that will decrease over time (ex: tetanus antitoxin) - ___ : occurs when the fetus receives antibodies from the mother through placental blood before birth, can also be acquired through breast feeding - ___ : is achieved through injection of vaccines; immunizations (ex: shots for flu, polio, Hep B) - ___ : is provided by an injection with antibodies derived from the infected blood of people or animals. (ex: serum immune globulin for Hep A or mumps) |
- naturally acquired immmunity
- passive acquired immunity - naturally acquired passive immunity - artificially acquired immunity - artificially acquired passive immunity |
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Viruses
- extremely small, seen only with a ___ microscope - composed of particles of nucleic acid, either ___ or ___, with a ___ coat - only grow and replicate within a ___; survival and replication depend on ___ |
- electron
- DNA or RNA , protein - living cell , host tissue |
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Viruses
- are ___ - cannot obtain ___, rid their ___, or ___ without a host cell - the ___ can dry and protect the a virus for years - 3 examples of old and new viruses |
- parasites
- food, waste, reproduce - protein coat - old: smallpox, polio, diptheria - new: HIV, SARS, Ebola |
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Protozoa
- is a ___ ___ organism belonging to the animal kingdom - protozoa are ___ ~ Examples - Plasmodium species causes ___ - Entamoeba histolytica causes ___ - other strains are capable of causing ___ |
- one-celled microscopic
- parasites - malaria - amebic dysentery - diarrhea |
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Rickettsia
- small ___ or ___ shaped organisms - rickettsia is a ___ - are transmitted by the bites of ___, ___, and ___ that act as ___ - can multiply only in ___ - causes diseases such as ___ and ___ ~ has features of both ___ and ___ - reproduces ___ - uses the host cell for ___, ___, ___, and ___ - resistant to ___ and ___ |
- round , rod-shaped
- parasite - fleas , ticks, lice ; vectors - host cells - Rocky Mountain Spotted Fever and Typhus ~ bacteria and viruses - independently - energy (ATP), vitamins, minerals, nutrients - heat and drying |
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Fungi
- tiny primitive organisms of the ___ kingdom that contain no ___ - include ___ and ___ - feed off of ___ and ___ - reproduce by the use of ___ - 2 common fungal infections are ___ and ___ - 4 other disorders or infections caused by fungi - fungal infections in humans are called ___ - fungal infections are common in patients with ___, specifically Pneumocystis jiroveci - when the balance of normal flora is altered by ___, a fungal infection may occur |
- plant , chlorphyll
- yeast and mold - living animals and decaying organic matter - spores - candiiasis, tinea pedis (athlete's foot) - thrush, vaginitis, pneumonia, meningitis - mycoses - AIDS - antibiotic therapy |
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Helminths
- are parasitic ___ or ___ - belong to the ___ kingdom - ___, which mostly affect children, are the most common helminths worldwide - ___ and ___ are other types of helminths - are transmitted by ingesting ___ or by ___ penetrating through skin/mucous membranes - helminths cause ___ and ___ |
- worms or flukes
- animal - pinworms - roundworms and tapeworms - fertilized eggs , larvae - amemia and hydronephrosis |
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Mycoplasmas
- very small organisms without a ___ - cause infections of the ___ or ___ tract - example |
- cell wall
- respiratory tract or gential tract - mycoplasma pneumoniae |
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Chlamydia
- affects the ___ and ___ tracts - in countries where hygine is poor, Chlamydia trachomatis is responsible for ___, an eye disease that can cause blindness - in the US, Chlamydia trachomatis causes a sinificant amount of ___ in individuals |
- genitourinary tract and reproductive tract
- trachoma - STI's or STD's |
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Process of Infection
- an infectious disease is spread from one person to another through means of a continuous ___ - chain of infection is affected by the ___ of the pathogen - each chain lonk must be present in its ___ for the chain to remain intact and for the infection to be passed on to someone else |
- infection chain
- virulence - proper order |
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Causative Agent- Link 1
- is any microorganism or biologic agent capable of ___ - pathogenic microorganisims must be ___ or rendered ___ in order to remove this link from the chain - ___ and ___ are methods used to destroy pathogens - the most effective means for destroying viruses is through the use of a ___ |
- causing a disease
- destroyed , harmless - disinfection and sterilization - autoclave (produces high heat for 16-20 min) |
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Reservoir- Link 2
- are places where ___ are found - precautions used to prevent the spread of infection are ___ and ___ - a good example of a a reservoir is the ___ - spaces such as ___, ___, and ___ could also serve as a reservoir - conditions such as ___, ___, and ___ make reservoirs conducive to pathogens |
- microorganisms
- good hand hygiene , sterile technique - GI Tract - lungs, liver, lymph, kidneys - dark, moist, warm |
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Portal of Exit- Link 3
- is the ___ by which the pathogens ___ - portal-of-exit transmission can be interrupted by ___ and ___ patients who are infected with pathogens - ___ and ___ that include the proper handling and disposal of secretions, urine and feces, can prevent transfer of pathogens - ____ are based on interrupting the mode of transmission by identifying specific secretions, body fluids, tissues, or excretions that might be infective - the ___ is a good example of an exit (give ex) |
- route , leaves its host
- identifying and treating - isolation techniques and barrier precautions - transmission-based precautions - GI system ( E. coli exit form the bowel and enter the urinary tract, causing UTI) |
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Modes of Transfer- Link 4
- 5 modes of transfer - 4 examples of daily exposure to a patient's blood |
- direct contact w/ body fluids, indirect contact w/ fomites, vectors, droplet infection, spread of infection from one body part to another
- changing surgical dressings, blood transfusions, shots, giving IV's |
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Portal of Entry- Link 5
- enter the body through 6 ways |
- eyes, nose, mouth, trachea, skin, mucous membranes
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Susceptible Host- Link 6
- susceptibility can be decreased by teaching ___ and ___ - susceptable hosts can be protected by using ___, ___ and ___ |
- good health / hygiene habits , immunizations
- aseptic techniques , barrier precautions, and protective isolation |
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Body Defenses Against Infection
- ___ is the first line of defense against infection - ___, which line the respiratory tract, trap microorganisms and debris and propel them up an dout of the body with a wavelike action - the ___ in the liver destroy bacteria that have found their way into the portal circulation - ___ such as HCl acid easliy destroy ingested pathogens |
- intact skin
- cilia - kupffer cells - gastric secretions |
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Body Defenses Against Infection
- ___ is the first line of defense against infection - ___, which line the respiratory tract, trap microorganisms and debris and propel them up an dout of the body with a wavelike action - the ___ in the liver destroy bacteria that have found their way into the portal circulation - ___ such as HCl acid easliy destroy ingested pathogens |
- intact skin
- cilia - kupffer cells - gastric secretions |
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Second Line of Defense
- the body automatically ___ in response to an infection - difference between a viral and bacterial infection |
- increases temperature
- Viral: low grade fever, high monocyte count, low neutrophil count - Bacterial: high grade fever, high neutrophil and monocyte count |
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Inflammatory Response
- is a localized protective response brought on by ___ or ___ - histamine and serotonin affect the inflammatory response by ___ - pus is ___ |
- injury or destruction of tissues
- acting on the walls of capillaries making them more permeable - an accumulation of dead neutrophils; the debris that results from the inflammatory response that may accumulate over the site |
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Immune Response
- ___ is the body's deliberate production of antibodies or lymphocytes to target specific antigens - ___ is temporary protection with antibodies that will decrease over time - |
- acquired immunity
- passive immunity |
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Medical Asepsis
- reducing the ___ or reducing the risk for ___ - used to remove ___ - is referred to as a ___ |
- number of organisms , transmission of organisms
- some pathogens - clean technique |
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Surgical Asepsis
- is the practice of ___ and ___ materials in such a way that prevents the ___ exposure to living microorganisms - surgical asepsis is referred to as ___ |
- preparing and handling , patient's
- sterile technique |
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Gloves
- hand hygiene is performed ___ and ___, because no gloves are 100% protective - gloves are never to be ___ or ___ |
- immediately before and after gloving
- reused or washed |
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Latex Allergy
- may cause ___, local ___, and ___ of the hands, and ___ - ___, ___, and ___ are at risk for developing a latex allergy |
- inflammation, purities, anaphylaxis
- multiple surgical procedures; food allergy to bananas, kiwis, or avacados, have had a history of reactions to other latex containging products |
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Disposals of Sharps
- sharp containers should be replaced when they are ___ |
- 3/4 full
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Contaminated Waste
- must be disposed of in sealed, impermeable, plastic bags marked ___ or ___ - contaminated linens should be handled in a ___ unless all linen in hospital facility is treated as a contaminated ___ |
- "hazardous waste" or "biohazard"
- like manner , biohazard |
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Disinfection
- helps eliminate ___ organisms after cleaning - disinfectant is ___ to the skin - before disinfection, items must be ___ - disinfection relates to ___ and ___, while antiseptic relates to ___ and ___ - ___ is a solution that destroys bacteria - ___ is a solution that prevents the growth and reproduction of some bacteria |
- some
- caustic - thouroughly rinsed - disinfection: surfaces and materials - antiseptic: skin and tissues - bactericidal - bacteriostatic |
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Sterilization
- is the best method of ___ from equiptment and supplies - ___ is the method used if materials are susceptible to heat damage |
- eliminating
- radiation |
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Asepsis in the Home Environment
- exposing bedding and other items the patient uses that can not be disinfected to ___ may reduce the number of microorganisms on them |
- 6-8 hours of sunshine
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Infection Control Surveillance
- ___ is responsible for ensuring infection prevention and control measures are followed |
- infection control practitioner
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