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Asepsis vocab
Nursing 101 Unit 5
| Question | Answer |
|---|---|
| Acquired immunity | see Passive immunity |
| Active immunity | a resistance of the body to infection in which the host produces its own antibodies in response to natural or artificial antigens |
| Acute infection | those that generally appear suddenly or last a short time |
| Airborne precautions | methods used to reduce exposure to infectious agents transmitted by airborne droplet nuclei smaller than 5 microns |
| Airborne transmission | infectious agent transmitted by droplets or dust |
| Antibodies | immunoglobulins, part of the body's plasma proteins, defend primarily against the extracellular phases of bacterial and viral infections |
| Antigen | a substance capable of inducing the formation of antibodies |
| Antiseptics | agents that inhibit the growth of some microorganisms |
| Asepsis | freedom from infection or infectious material |
| Autoantigen | an antigen that originates in a person's own body |
| Bacteremia | bacteria in the blood |
| Bacteria | the most common infection-causing microorganisms |
| Bacteriocins | substances produced by some normal flora (ex , enterobacteria), that can be lethal to related strains of bacteria |
| Bloodborne | pathogens those microorganisms carried in blood and body fluids that are capable of infecting other persons with serious and difficult to treat viral infections, namely hepatitis B virus, hepatitis C virus, and HIV |
| Body substance isolation (BSI) | generic infection control precautions for all clients except those with diseases transmitted through the air |
| Carrier | a person or animal that harbors a specific infectious agent and serves as a potential source of infection, yet does not manifest any clinical signs of disease |
| Cell-mediated defenses | see Cellular immunity |
| Cellular immunity | also known as cell-mediated defenses, occur through the T-cell system |
| Chemotaxis | the action by which leukocytes are attracted to injured cells |
| Chronic infection | infection that occurs slowly, over a very long period, and may last months or years |
| Cicatrix | scar |
| Circulating immunity | see Humoral immunity |
| Clean | free of potentially infectious agents |
| Colonization | the presence of organisms in body secretions or excretions in which strains of bacteria become resident flora but do not cause illness |
| Communicable disease | a disease that can spread from one person to another |
| Compromised host | any person at increased risk for an infection |
| Contact precautions | methods used to reduce exposure to infectious agents easily transmitted by direct client contact or by contact with items in the client's environment |
| Cultures | laboratory cultivations of microorganisms in a special growth medium |
| Diapedesis | the movement of blood corpuscles through a blood vessel wall |
| Dirty | denotes the likely presence of microorganisms, some of which may be capable of causing infection |
| Disinfectants | agents that destroy pathogens other than spores |
| Droplet nuclei | residue of evaporated droplets that remains in the air for long periods of time |
| Droplet precautions | methods used to reduce exposure to infectious agents transmitted by particle droplets larger than 5 microns |
| Emigration | process in which leukocytes move through the blood vessel wall into the affected tissue spaces |
| Endogenous | developing from within |
| Exogenous | developing from without |
| Exudate | material, such as fluid and cells, that has escaped from blood vessels during the inflammatory process and is deposited in tissue or on tissue surfaces |
| Fibrinogen | a plasma protein that is converted to fibrin when it is released into the tissues and, together with thromboplastin and platelets, forms an interlacing network making a barrier to wall off an area |
| Fibrous (scar) tissue | connective tissue repair of wounds with tissue that can proliferate under conditions of ischemia and altered pH |
| Fungi | infection-causing microorganisms that include yeasts and molds |
| Granulation tissue | young connective tissue with new capillaries formed in the wound healing process |
| Humoral immunity | antibody-mediated defense; resides ultimately in the B lymphocytes and is mediated by the antibodies produced by B cells |
| Hyperemia | increased blood flow to an area |
| Iatrogenic infection | infections that are the direct result of diagnostic or therapeutic procedures |
| Immune defenses | see Specific defenses |
| Immunity | a specific resistance of the body to infection; it may be natural, or resistance developed after exposure to a disease agent |
| Immunoglobulins | see Antibodies |
| Infection | the disease process produced by microorganisms |
| Inflammation | local and nonspecific defensive tissue response to injury or destruction of cells |
| Isolation | practices that prevent the spread of infection and communicable disease |
| Leukocytosis | an increase in the number of white blood cells |
| Local infection | an infection that is limited to the specific part of the body where the microorganisms remain |
| Macrophages | large phagocytes |
| Margination | the aggregating or lining up of substances along a surface or edge (eg, the lining up of white blood cells against the wall of a blood vessel during the inflammatory process) |
| Medical asepsis | all practices intended to confine a specific microorganism to a specific area, limiting the number, growth, and spread of microorganisms |
| Nonspecific defenses | bodily defenses that protect a person against all microorganisms, regardless of prior exposure |
| Nosocomial infections | infections associated with the delivery of health care services in a health care facility |
| Occupational exposure | skin, eye, mucous membrane, or parenteral contact with blood or other potentially infectious materials that may result from the performance of an employee's duties |
| Opportunistic pathogen | a microorganism causing disease only in a susceptible individual |
| Parasites | microorganisms that live in or on another from which it obtains nourishment |
| Passive immunity | a resistance of the body to infection in which the host receives natural or artificial antibodies produced by another source |
| Pathogenicity | the ability to produce disease; a pathogen is a microorganism that causes disease |
| Phagocytes | cells that ingest microorganisms, other cells, and foreign particles |
| Reservoir | a source of microorganisms |
| Resident flora | microorganisms that normally reside on the skin, mucous membranes, and inside the respiratory and gastrointestinal tracts |
| Sepsis | the presence of pathogenic organisms or their toxins in the blood or body tissues |
| Septicemia | occurs when bacteremia results in systemic infection |
| Specific (immune) defenses | immune functions directed against identifiable bacteria, viruses, fungi, or other infectious agents |
| Sterile field | a specified area that is considered free from microorganisms |
| Sterile technique | practices that keep an area or object free of all microorganisms |
| Sterilization | a process that destroys all microorganisms, including spores and viruses |
| Surgical asepsis | see Sterile technique |
| Systemic infection | when pathogens spread and damage different parts of the body |
| Universal precautions (UP) | techniques to be used with all clients to decrease the risk of transmitting unidentified pathogens; currently, Standard Precautions incorporate UP and BSI |
| Vector-borne transmission | a vector is an animal or flying or crawling insect that serves as an intermediate means of transporting the infectious agent |
| Vehicle-borne transmission | a vehicle is any substance that serves as an intermediate means to transport and introduce an infectious agent into a susceptible host through a suitable portal of entry |
| Virulence | ability to produce disease |
| Viruses | nucleic acid-based infectious agents |