Lecture 10- Sterilization, disinfection and antisepsis

Question 1

Zika produces … disease in adults

Answer 1

mild

Question 2

symptoms of zika

Answer 2

fever
rash
joint pain
conjunctivitis 
muscle pain
headache

Question 3

What will the zika virus cause in the fetus in a pregnant patient?

Answer 3

microcephaly and other severe brain defects

Question 4

zika is a … borne virus

Answer 4

mosquito

Question 5

T/F zika transmission is possible in healthcare settings

Answer 5

true

Question 6

… has a 50% fatality rate. greater age is associated with a higher fatality rate

Answer 6

ebola

Question 7

symptoms of ebola

Answer 7

fever
severe headache
muscle pain
vomiting
diarrhea
stomach pain
bruising 
bleeding

Question 8

… is highly infectious, 1 virus may be enough. although it is only moderately contagious.

Answer 8

ebola

Question 9

ebola is transmitted by …

Answer 9

direct contact with bodily fluids or mucous membranes

Question 10

zika is … transmitted

Answer 10

sexually

Question 11

T/F ebola can be transmitted in the air

Answer 11

false

Question 12

… is an enveloped virus so it is killed by alcohol hand sanitizer and many disinfectants

Answer 12

ebola

Question 13

T/F Ebola can survive on un-disinfected surfaces for several hours or longer

Answer 13

true

Question 14

The risk of transmission of … from healthcare worker to patient is very low and there is also a low occupational risk for the healthcare provider to get it from their patient

Answer 14

HIV

Question 15

with …, immediate post-exposure retroviral therapy is effective

Answer 15

HIV

Question 16

The risk of … from percutaneous exposures is 3-4 per 1000 exposures

Answer 16

HIV

Question 17

There are … persons affected each year by hep B

Answer 17

300k

Question 18

Risk of transmission during dental procedures of tuberculosis is …

Answer 18

low

Question 19

tuberculosis is not transmitted by … contamination

Answer 19

surface

Question 20

tuberculosis produces … aerosols

Answer 20

ineffective

Question 21

Herpes may be transmitted to healthcare workers and it can be in the following 2 forms

Answer 21

ocular (causes blindness)

viral whitlow (finger lesion)

Question 22

Immunizations recommended for HCP by CDC

Answer 22

varicella zoster
influenza
hep B
mumps
measles
rubella

Question 23

examples of critical, non-critical and semi-critical items

Answer 23

critical - surg instr.
semi-critical- curing light
non-critical- pressure cuff

Question 24

… items come in contact with intact skin

Answer 24

non-critical

Question 25

… is the destruction or remocal of all forms of life including spores. can be heat or chemical

Answer 25

sterilization

Question 26

… is the inhibition or destruction of pathogens when spores are not killed

Answer 26

disinfectants

Question 27

… are formulated to destroy pathogenic microorganisms on living tissues and are safe for use on human tissues

Answer 27

antiseptics

Question 28

T/F antiseptics and disinfectants can be used interchangeably

Answer 28

false

Question 29

high level disinfection destroys all microorganisms with the exception of

Answer 29

bacterial spores

Question 30

intermediate level disinfection inactivates … , vegetative bacteria, most viruses, most fungi, but does not kill spores

Answer 30

mycobacterium tuberculosis

Question 31

low level disinfection kills most bacteria, some viruses, some fungi but it cannot be relied on to kill

Answer 31

mycobacterium tuberculosis

or

spores

Question 32

critical items require

Answer 32

sterilization

Question 33

semi critical items require

Answer 33

high or intermediate level disinfection

Question 34

noncritical items require

Answer 34

low level disinfection

Question 35

characteristics of heat sterilization

Answer 35

saturated steam under pressure

dry heat

unsaturated chemical vapor

Question 36

… is the most oldest most commonly used method to sterilize

Answer 36

autoclave

Question 37

autoclave conditions- steam under pressure:
temp?
pressure?
time?

Answer 37

121 degrees celsius
15 psi
15-20 minutes

Question 38

biggest disadvantage of autoclaving

Answer 38

corrosion (oxidation) of unprotected carbon steel and dulling of cutting edges - may be prevented with 1% sodium nitrite solution

Question 39

flash steam
temp?
pressure?
time?

Answer 39

134 C
30 psi
6-12 min

Question 40

dry heat sterilization conditions

Answer 40

160C (320 F) for 2 hours

170C (340 F) for 1 hour

Question 41

T/F dry heat sterilization dulls cutting edges

Answer 41

false