Infection control - disinfectants and sterilisation

Question 1

Efficiency of Alcohol

Answer 1

Bacteria - Good (inc MRSA)
Bacterial spores - Not active
Viruses - Variable
Fungi - Good

Question 2

Efficiency of Biguanides

Answer 2

Bacteria - gram positive, less so gram negative
Bacterial spores - Not active
Viruses - Variable
Fungi - Fair

Question 3

Quaternary ammonium compounds

Answer 3

Bacteria - gram positive good, gram negative poor. No activity on mycobacteria
Bacterial spores - Not active
Viruses - Poor
Fungi - Good

Question 4

Efficiency of Iodine

Answer 4

Bacteria - Good
Bacterial spores - Good
Viruses - Good
Fungi - Good

Question 5

Efficiency of Halogens

Answer 5

Bacteria - Good
Bacterial spores - Good
Viruses - Good
Fungi - Good

Question 6

Efficiency of Oxidising agents

Answer 6

Bacteria - Good, poor against mycobacteria
Bacterial spores - Variable
Viruses - Good
Fungi - Good

Question 7

Efficiency of phenols

Answer 7

Bacteria - Good
Bacterial spores - Not active
Viruses - Good
Fungi - Good

Question 8

Efficiency of Alderhydes

Answer 8

Bacteria - Good
Bacterial spores - Good
Viruses - Good
Fungi - Good

Question 9

Definition of disinfection

Answer 9

The removal of micro-organisms but not necessarily their spores

Question 10

Definition of Sterilisation

Answer 10

The removal of all micro-organisms including bacterial spores

Question 11

Definition of Asepsis

Answer 11

The exclusion of all micro-organisms and their spores, often achieved by sterilisation.

Question 12

Definition of Disinfectant

Answer 12

A chemical agent that kills or prevents multiplication of inanimate objects

Question 13

-Cide

Answer 13

Suffix meaning kills

Question 14

-Stat

Answer 14

Suffix meaning prevention of growth of multiplication