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14 Cards in this Set
- Front
- Back
Etiologic Agent
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any pathogen capable of causing infection; causative agents include bacteria, virus, fungi, protozoa, rickettsiae, and helminths
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Reservior
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favorable environment in which infectious organism grows and reproduces; reservior may be animate (humans insects, animals), or inanimate (food, water, soil, equipment)-blood and the respiratory, GI, reproductive, and urinary tracts serve as reserviors in humans.
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Portal of exit
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route by which microorganism leaves reservior-i.e. breaks in skin, secretions, etc.
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Method of Transmission
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mode by which microorganism is trnasferred from reservoir to host
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3 mode of transmission
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direct transmission, indirect transmission, airborne transmission
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Direct contact/transmission
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Involves physical transfer from reservior to susceptable host via either a vehicle or a vector: kising, biting, intercourse-coughing and sneezing within 3 feet of susceptable host
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Indirect contact/transmission
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Involves transfer from reservior to susceptable host via either a vehicle or a vector; vehicle borne agen requires inanimate object or animal
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Airborne transmission
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involves transport of droplet nuclei or dust bearing the infectious agent by air currents.
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Susceptible Host
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individual at an increased risk for infection-infection occcurs when the infectious agent overwhelm's host's defenses to resist infection
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Medical Asepsis a.k.a
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"clean technique"
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Surgical asepsis
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involves practices to maintain objects and areas free of microorganisms
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MRSA
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methicillin-resistant Staphylococcus aureus
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VRE
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vancomycin-resistant enterococcus
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Droplet Precautions
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particle droplets larger than 5 microns, normally via respiratory tract
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