PMLS LESSON 8 PART 3

Question 1

what are the decontaminating agents?

Answer 1

alcohol, fomaldehyde and hypochlorites

Question 2

are used to kill or deactivate pathogenic microorganisms

Answer 2

chemical agents

Question 3

Most widely used of the chlorine disinfectants

Answer 3

hypochlorites

Question 4

what is the other name for hypochlorites?

Answer 4

Sodium hypochlorites, 5.25%-6.15% sodium hypochlorite concentration, household bleach

Question 5

what does the hypochlorite capable of killing? contact time of the microorganisms?

Answer 5

Bactericidal, tuberculocidal, fungicidal and virucidal
bacterial spores - long contact time (More than or equal to 30 minutes)

Question 6

what is the contact time of hypochlorites and bacterial spores?

Answer 6

long periods more than or equal to 30 minutes

Question 7

what is the dilution rate of hypochlorites being used for biological spills

Answer 7

1:10 dilution rate of household bleach

Question 8

what is formed when hypochlorites come in contact with fomaldehyde?

Answer 8

bis(chloromethyl) ether

Question 9

what is the percentage of alcohol to be able to kill bacteria and other microorganisms?

Answer 9

70%

Question 10

Rapidly bactericidal rather than bacteriostatic against vegetative forms of bacteria

Answer 10

Alcohol

Question 11

It does not kill the bacteria. It just prevents it from reproducing or growing.

Answer 11

bacteriostatic

Question 12

Alcohol is capable of killing?

Answer 12

tuberculocides, fungicides, viruses, bacterias

Question 13

time of contact for bacteria and enveloped viruses for alcohol? how about for fungi and mycobacteria?

Answer 13

viruses and alcohol - short contact time
fungi and mycobacteria - longer

Question 14

Not recommended for sterilizing medical and surgical
materials principally because they lack the sporicidal action
and cannot penetrate protein-rich materials

Answer 14

alcohol

Question 15

what is the most feasible explanation for the microbial action of alcohol?

Answer 15

denaturation of protein

Question 16

why is alcohol not recommended for sterilizing medical and surgical materials?

Answer 16

lack of sporicidal action and cannot penetrate protein-rich materials

Question 17

what is formladehyde used as?

Answer 17

used as preservation/preserving agent for tissues

Question 18

how does formaldehyde inactivate microorganisms?

Answer 18

alkylating the amino and the sulfhydryl groups of proteins and ring nitrogen atoms of purine bases

Question 19

is the reaction between hypochlorite and formaldehyde?

Answer 19

carcinogen

Question 20

fomaldehyde is sold as?

Answer 20

formalin, 37% formaldehyde by weight

Question 21

it is a potential carcinogen

Answer 21

fomaldehyde