Lecture 6 - Asepsis Flashcards Preview

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Flashcards in Lecture 6 - Asepsis Deck (75)
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1

What is asepsis?

Absence of microorganisms that cause disease

2

What is aseptic technique?

Method to prevent contamination by microorganisms;
"clean" technique

3

What does it mean if something is sterile?

It is free of all living organisms

4

What is sterile technique?

Method by which contamination with microorganisms is prevented;
performed in a sterile field

5

What is a pathogen?

Microorganism that causes infection; can be human or animal

6

What is infection?

Multiplication of an agent within the tissues that results in cellular injury

7

What is nosocomial infection?

Infection resulting from hospital treatment;
AKA hospital-acquired infection (HAI)

8

What is surgical asepsis?

Procedures used to keep the object or area sterile or free of microorganisms.

9

What are all practices directed to eliminate?

Pathogenic and non-pathogenic microorganisms

10

What is the most common type of nosocomial infection?

Surgical site infection (SSI)

11

Surgical site contamination with _____ microorganisms per g of tissue increases risk of SSI.

>10^5

12

What is often the source of SSIs?

endogenous flora

13

How can SSIs be diagnosed?

Will have purulent discharge, inflammation, can isolate microorganism

14

What are common bacteria that cause SSIs?

Staphylococcus aureus, Streptococcus, Enterobacter, Enterococcus, E. coli

15

Staph aureus can be found in nares of _____ healthy humans.

20-30%

16

What are the 3 types of SSIs?

1. Superficial incisional SSI
2. Deep incisional SSI
3. Organ/Space SSI

17

During what time period can superficional incisional SSIs develop?

Within 30 days of sx

18

What tissues do superficial incisional SSIs affect?

Skin/SQ

19

What signs are seen with superficial incisional SSIs?

Purulent drainage, culture, inflammation

20

During what time period can deep incisional SSIs develop?

Within 30 days of sx; within 1 year with implant

21

What tissues do deep incisional SSIs affect?

Deep tissue (fascia/muscle)

22

What signs are seen with deep incisional SSIs?

Purulent drainage, abscess, fever/pain

23

During what time period can organ/space SSIs develop?

Within 30 days of sx; within 1 year with implant

24

What tissues do organ/space SSIs affect?

organ or space

25

What signs are seen with organ/space SSIs?

Purulent drainage, abscess, fever/pain

26

SSIs increase _____ and _____ rates.

morbidity, mortality

27

SSIs occur in _____% of humans

10-15

28

SSIs occur in _____% of small animals.

1-18

29

SSIs occur in _____% of equines.

1-50

30

What are prophylactic antimicrobials?

Brief course of antimicrobials administered immediately before a surgical procedure.