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Flashcards in Micro Deck (14):
1

What are residents micro organisms?

Normal flora on body in epidermis brought to skin by sweating, secretions

2

What are transient micro organisms?

Transportable and can be picked up and passed on to others. Can be removed by mechanical cleansing.

3

What are pathogens?

Micro organisms capable of producing infection in favourable conditions.

4

What is contamination?

Presence of micro organisms. Can be animate or inanimate objects

5

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

6

What are the body's three lines of defence?

Intact barriers
Inflammatory response
Immunity (passive and active)

7

What are intact barriers?

Skin, mucous membranes, reflexes, sneeze, genitourinary/reproductive tracts, eyes, cellular level, stomach acid, and muscular closure of orifices

8

What are the three second lines of defence

Inflammatory response
Antibody production
Temp elevation

9

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.

10

How can microorganisms be transmitted?

Airborne
Droplet
Contact (direct or indirect)
Vehicle
Vector borne(via arthropod)

11

What are Classifications of microorganism?

Bacteria
Viruses
Fungi
Protozoa
Helminthology
Prions

12

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

13

Major sources of contamination in or

Skin
Hair
Nosopharynx
Air/dust/fomites

14

What are some host susceptibility factors?

Age
Diabetes
Steroid therapy
Obesity
Malnutrition
Length of stay
Emergency surgery
Foreign bodies