Antiseptics and Disinfectants Flashcards Preview

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Flashcards in Antiseptics and Disinfectants Deck (19):
1

Sterilization

Destruction of all life

2

Sanitization

Reducing the pathogen load by 99.9%

3

Disinfectant

Reduces the pathogen load by 99.9999%

4

Antiseptic

An agent that prevents or arrests the development of microorganisms

5

Resistance level to disinfectants: Medium-sized lipid viruses (enveloped), vegetative bacteria, fungi, small non-lipid viruses (unenveloped)

Low level

6

Resistance level to disinfectants: Tubercle bacilli, coccidial oocysts, protozoal cysts

Intermediate level

7

Resistance level to disinfectants: bacterial spores

High level

8

Proper time/temp for dry heat sterilization

160C for 2 hours, 170C for 1 hour

9

Can survive boiling

bacterial spores, protozoan cysts, some viruses

10

Quaternary ammonium compounds

Low level disinfectants; more effective against gram + than -; relatively ineffective against spores & fungi

11

Phenols

low to intermediate level disinfectants; not sporicidal; inhibited by hard water; do not use around cats

12

Chlorhexadine (disinfectant)

low level disinfectant; good against gram +, less effective against -; not effective against pseudomonas/gram + cocci; looses activity in anionic detergents

13

Chlorhexadine (antiseptic)

potentially ototoxic if TM ruptured

14

Iodines

Not suitable as antiseptics

15

Povidone iodine

antiseptic; less toxic to tissues, can be used in wounds; do not use skin prep in wounds

16

Foot baths

10% zinc sulfate (used in sheep to avoid copper exposure); 5-10% copper sulfate (most commonly used); 2.5-5% formalin (heel warts, toughens sole so be mindful of hoof cracking)

17

Silver sulfadiazine (0.5%-1% topical)

antiseptic; used in burns, wounds and otically; broad spectrum even against pseudomonas

18

EDTA

antiseptic; many bacteria including pseudomonas, proteus, e. coli, and staph are susceptible; commonly used in otitis externa, multi-resistant bladder infections as an infusion, and for wounds/fistulas

19

Benzoyl peroxide

antiseptic; used mainly for staph pyodermas; too toxic for tissues; most repository skin antiseptic