Microbiology/cross Infection Flashcards

1
Q

List 3 types of micro-organisms?

A

1- bacteria
2- fungi
3- virus

Bacterial spores

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2
Q

What does cross infection mean?

A

Transfer of micro-organisms from one person to another e.g. patient to patient

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3
Q

What does disinfection mean?

A

Chemical killing of bacteria and fungi but not all viruses and spores

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4
Q

What does sterilisation mean?

A

Killing of all micro-organisms bacteria fungi viruses and spores

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5
Q

What does decontamination mean?

A

Range of processes cleaning disinfection and/or sterilisation which render instruments and equipment see for use

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6
Q

What does zoning mean?

A

Having separate clean and dirty zones to reduce the risk of cross infection

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7
Q

What does pathogenic mean?

A

Microorganisms able to cause disease

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8
Q

What does asepsis mean?

A

The absence of all living pathogenic microorganisms

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9
Q

Give two examples of diseases caused by pathogens

A

hepatitis B TB hepatitis C common cold flu

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10
Q

I make organism capable of causing disease as described as what?

A

Pathogenic

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11
Q

Micro organism, which can cause disease is said to be what?

A

Pathogenic

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12
Q

What is a standard precaution?

A

Threat all patients as infectious

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13
Q

What does SICPS stand for?

A

Standard infection control precautions

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14
Q

Give an example of how you apply SCIPS?

A

Threatball patients as infectious follow practice cross infection policy /follow the same high standard of infection control for all patients

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15
Q

What is a prion?

A

Abnormal protein unable to be destroyed by autoclaving

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16
Q

A person who has no symptoms of a disease but may pass it onto another person is called a what?

A

Carrier

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17
Q

What is the term used for a documented quality assurance procedure applied to each stage of the decontamination process to ensure the procedure is consistently carried out to a required standard?

A

Validation

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18
Q

Why is it important to keep records in relation to cross infection?

A

For validation (proof)

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19
Q

Give two examples of records that should be kept in relation to infection control

A

Waste consignment notes, data radar or printouts from autoclave/WD, logbooks

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20
Q

What is an example of bacteria?

A

Stretococcus mutans

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21
Q

What is the disease caused by streptococcus mutans?

A

Dental caries

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22
Q

What is an example of fungi?

A

Candida albicans

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23
Q

What is the disease caused by Candida albicans?

A

Oral thrush
Denture stomatitis
Angular cheilitis

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24
Q

What is an example of fungi?

A

Herpes simplex

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25
Q

What is the disease caused by herpes simplex?

A

Herpes labialis (cold sores)

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26
Q

Name the disease caused by lactobacillus

A

Dental caries

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27
Q

Name the disease caused by borellia Vincentii

A

ANUG

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28
Q

Name the disease caused by Legionella

A

Legionnaires disease

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29
Q

Name the micro organism that causes denture stomatitis

A

Candida albicans

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30
Q

Name the micro organism mainly responsible for angular cheilitis

A

Candida albicans

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31
Q

Name the micro organisms that causes cold sores

A

Herpes simplex

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32
Q

Name the micro organisms that’s mainly involved in dental caries

A

Streptococcus mutans

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33
Q

What shape is cocci?

A

Round

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34
Q

What shape is bacilli?

A

Rod

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35
Q

What shape is vibrios?

A

Comma

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36
Q

What shape is filamentous

A

Thread like

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37
Q

What shape is spirochaetes

A

Spiral

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38
Q

What is a bacterium?

A

Lactobacillus

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39
Q

What does SDCEP stand for?

A

Scottish Dental Clinical Effectiveness Programme

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40
Q

Correct time, temperature and pressure for autoclave?

A

3 minutes 134 degrees 2.2bar pressure

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41
Q

How often should a manual test be carried out and recorded for autoclave?

A

Once per day

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42
Q

3 values should be recorded during manual test of autoclave

A

Time, temperature and pressure

43
Q

List 3 items which are sterilised by gamma-irradiation

A

1- scalpel
2- sutures
3- local anaesthetic cartridges needles disposable syringes surgical gowns cannula

44
Q

What procedure should be followed if a fault occurs with the autoclave?

A

Stop autoclave immediately, report, out of use notice on the door, use alternative autoclave, contact engineer or identify fault from manual

45
Q

List the correct sequence for the washer disinfectant cycle

A

Flush, wash, rinse, thermal disinfection, dry

46
Q

List the correct sequence for the washer disinfectant cycle

A

Flush, wash, rinse, thermal disinfection, dry

47
Q

According to SDCEP guidelines, what temperature and time does the washer disinfector need to reach at the thermal disinfection stage?

A

80°c for 10 minutes or 90°c for one minute

48
Q

According to SDS guidelines, what is the maximum temperature that should be reached by the washer disinfectant during the flush stage?

A

Less than 45°C

49
Q

According to SDS guidelines, what is the maximum temperature that should be reached by the washer disinfectant during the flush stage?

A

Less than 45°C

50
Q

Why is it important the washer does not exceed 45°C during the flush stage?

A

To prevent protein coagulation

51
Q

What is the microorganism commonly found in dental unit waterlines?

A

legionella

52
Q

What is the microorganism commonly found in dental unit waterlines?

A

legionella

53
Q

For how long between patients should dental unit waterlines be flushed?

A

30 seconds

54
Q

For how long between patients should dental unit waterlines be flushed?

A

30 seconds

55
Q

For how long at the beginning of a session should dental unit waterlines be flushed?

A

2 to 4 minutes

56
Q

Why should dental unit waterlines be flushed at the beginning of the session and between patients?

A

Minimise the risk of legionella lying in the waterlines

57
Q

List two diseases that dental mercies should be vaccinated against

A

Hepatitis B, BCG, measles, mumps rubella MMR, tetanus, polio, seasonal flu and Covid

58
Q

Following the third inoculation for hepatitis B a blood sample is taken to check what

A

Titre levels

59
Q

Immunisations initiate the body to produce what?

A

Antibodies

60
Q

Immunisations initiate the body to produce what?

A

Antibodies

61
Q

Name two types of immunity

A

1- natural/artificial
2-active/passive

62
Q

What does PPE stand for?

A

Personal protective equipment

63
Q

What is the purpose of gloves?

A

Protect hands from blood and saliva

64
Q

What is the purpose of gloves?

A

Protect hands from blood and saliva

65
Q

What is the purpose of goggle/visor?

A

Protect eyes from blood and splatter/debris

66
Q

What is the purpose of a mask?

A

Protect nose and mouth from blood and splatter

67
Q

What is the purpose of uniform?

A

To protect the body from blood and splatter

68
Q

What is the purpose of uniform?

A

To protect the body from blood and splatter

69
Q

What is the recommended time for completion of clinical hand hygiene?

A

20 to 30 seconds

70
Q

What is the recommended time for completion of clinical hand hygiene?

A

20 to 30 seconds

71
Q

What is the recommended time for a completion of surgical scrub hand hygiene?

A

3 to 4 minutes

72
Q

What is the recommended time for a completion of surgical scrub hand hygiene?

A

3 to 4 minutes

73
Q

Name two procedures that involve surgical hand hygiene

A

Implant, surgical extraction, oral surgery, apicetomy

74
Q

State the first reactions are dental nurse should take in the event of suffering a sharp injury

A

1- squeeze area to encourage bleeding
2- wash under running water
3- cover with waterproof dressing

75
Q

What do you understand by the term inoculation injury?

A

Needle stick injury

76
Q

List 4 ways a dental nurse can reduce the risk of cross infection

A

Hand washing between patient, zoning in the surgery and LDU, use single use items when possible, autoclaving all reusable instruments between patients, disinfect work surfaces between patients, wear PPE for protection, staff immunisation, segregate waste into correct stream

77
Q

What does direct contact mean relating to cross infection?

A

Past from the infected person to the healthy person via physical contact with blood or body fluids

78
Q

What does indirect contact mean relating to cross infection?

A

No direct here in contact/surface to person

79
Q

Give an example of transmission of infection by direct contact

A

Direct touch/handshake, coughing around a person

80
Q

Give an example of transmission of infection by direct contact

A

Direct touch/handshake, coughing around a person

81
Q

What type of disinfectant should the dental used to deal with a spillage of blood?

A

Sodium hypochlorite

82
Q

Name two solutions which may be used to decontaminate the surgery surfaces

A

Sodium hypochlorite, detergent, isopropyl alcohol

83
Q

Give an example for alcohol wipes

A

Disinfecting hard surfaces

84
Q

An example we are sodium hypochlorite would be used

A

Cleaning a blood spillage

85
Q

An example we are sodium hypochlorite would be used

A

Cleaning a blood spillage

86
Q

How should work surfaces be cleaned?

A

Alcohol/disinfectant/detergent wipe between every patient and before starting finish of each clinical session

87
Q

Give an example of two standard infection control procedures that should be covered during staff induction

A

Handwashing policy disposal of waste policy cross infection policy and sharps injury procedure

88
Q

Give an example of two standard infection control procedures that should be covered during staff induction

A

Handwashing policy disposal of waste policy cross infection policy and sharps injury procedure

89
Q

Give an example of two records that should be kept by the surgery in relation to cross infection

A

Waste consignment notes and autoclave cycles/washer disinfector cycle validation

90
Q

Give an example of two records that should be kept by the surgery in relation to cross infection

A

Waste consignment notes and autoclave cycles/washer disinfector cycle validation

91
Q

State three items that must be disposed of in the sharps box

A

Needles, endo files, matrix bands

92
Q

State two actions which are down on earth should take to minimise a risk of a sharps injury in the surgery

A

Safe handling and disposal of sharps in the sharps box, dispose of needle immediately after use, wear thick rubber gloves if manual cleaning, use needle guards or re-sheeting device, avoid lifting a large number of dirty instruments at the same time

93
Q

List three ways pathogens can enter the body

A

Inhalation/ingestion/injury or through eyes/nose/mouth

94
Q

List three ways pathogens can enter the body

A

Inhalation/ingestion/injury or through eyes/nose/mouth

95
Q

How is hepatitis B mainly transmitted?

A

Blood

96
Q

How is hepatitis B mainly transmitted?

A

Blood

97
Q

How is MRSA infection normally spread?

A

Skin to skin contact (hands)

98
Q

How is MRSA infection normally spread?

A

Skin to skin contact (hands)

99
Q

How often should a patient’s medical history be checked?

A

Every visit

100
Q

What decontamination process can be used in a dental surgery to ensure a contaminated item is safe for reuse?

A

Sterilisation and disinfection

101
Q

How should your decontaminate an alginate impression?

A

Rinse under tap to remove remove blood and saliva, immerse and disinfectant solution, remove rinse and wrap and weight goes, label lab sheet as disinfected

102
Q

What is an ultrasonic bath used for?

A

Debris removal

103
Q

List two surgery items that are single use and disposable

A

Three and one tip, aspirator tips, saliva ejectors, local anaesthetic needles and cartridges, mouthwash cups, Endo files, stainless steel bars, polishing cups/brushes, gloves, matrix bands, plastic syringes, plastic impression trays, scalpels and all other items marked single use

104
Q

State three steps according to SDCEP guidelines that must be taken to ensure safe storage and disposal of Malcolm

A

Use and well ventilated area, use capsules, dispose and Redstream waste sealed container, have a mercury spillage kit