Micro Flashcards
What are residents micro organisms?
Normal flora on body in epidermis brought to skin by sweating, secretions
What are transient micro organisms?
Transportable and can be picked up and passed on to others. Can be removed by mechanical cleansing.
What are pathogens?
Micro organisms capable of producing infection in favourable conditions.
What is contamination?
Presence of micro organisms. Can be animate or inanimate objects
Name 6 of the 11 ways bacteria can be classified
Cell morphology Mobility or motility Presence or absence of spores Native pigment Gram-stain reaction Growth factors How it colonizes Antibody detection in host Metabolism and atmosphere requirements Biochemical activity Sensitivity to exogenous chemicals or substances
What are the body’s three lines of defence?
Intact barriers
Inflammatory response
Immunity (passive and active)
What are intact barriers?
Skin, mucous membranes, reflexes, sneeze, genitourinary/reproductive tracts, eyes, cellular level, stomach acid, and muscular closure of orifices
What are the three second lines of defence
Inflammatory response
Antibody production
Temp elevation
Explain passive and active immunity
Passive- antibody is introduced into the body. There is no memory for replication.
Active- Iive, dead, or attenuated organism is introduced and triggers an antibody response. Memory is formed to produce antibodies against. Booster may be required.
How can microorganisms be transmitted?
Airborne Droplet Contact (direct or indirect) Vehicle Vector borne(via arthropod)
What are Classifications of microorganism?
Bacteria Viruses Fungi Protozoa Helminthology Prions
Common operating room bugs?
Staphylococci - MRSA
Escherichia Coli - urinary tract infect, GI
Streptococci
Mycobacterium tuberculosis
Pseudomonas - urinary, intestinal, water (loves water)
Serratia marcescens- urinary Tract, wound
Clostridium
Fungi
Hepatitis
Major sources of contamination in or
Skin
Hair
Nosopharynx
Air/dust/fomites
What are some host susceptibility factors?
Age Diabetes Steroid therapy Obesity Malnutrition Length of stay Emergency surgery Foreign bodies
