Microbiology

Question 1

Coagulase negative strep?

Answer 1

Staph. epidermidis

Staph. saprophyticus

Question 2

Novobiocin-resistant staph?

Answer 2

Staph. saprophyticus

Question 3

Staph which causes urinary tract infection in women of child bearing age?

Answer 3

Staph. saprophyticus

Question 4

Competitive bacterial flora

Answer 4

Staphylococcus epidermidis

• Corynebacterium sp. (“diphtheroids”) • Proprionobacterium sp.

Question 5

Green culture bottle

Answer 5

Aerobic

Question 6

Pink/red culture bottle?

Answer 6

Anaerobic

Question 7

Yellow culture bottle

Answer 7

Paediatric

Question 8

Treatment for staph. aureus?

Answer 8

Flucloxacillin

Question 9

Treatment for strep. pyogenes?

Answer 9

Penicillin (will also be treated by flucloxacillin)

Question 10

When would you take a swab of an ulcer?

Answer 10

Only take swabs if signs of cellulitis or infection are present

Question 11

Which type of patients might you see an ulcer caused by anaerobes?

Answer 11

Diabetic patients

Question 12

Tinea capitis

Answer 12

Scalp

-scalp mainly affects children

Question 13

Tinea barbae

Answer 13

Beard

Question 14

Tinea corporis

Answer 14

body

Question 15

Tinea manuum

Answer 15

hand

Question 16

Tinea unguium

Answer 16

nails

Question 17

Tinea cruris

Answer 17

groin

Question 18

Tinea pedis

Answer 18

Foot

athlete’s foot

Question 19

Where do dermatophytes infect?

Answer 19

Dermatophytes infect keratinised tissues only

Question 20

Lesion grows outwards and heals in centre, giving a “ring” appearance

Answer 20

Dermatophyte infection

Question 21

Anthropophilic fungi

Answer 21

Fungi which infect humans or something

Question 22

Trichophyton rubrum

Answer 22

Accounts for >70% of lab isolates in dermatophyte infection

Question 23

Where should skin scrapings be taken from?

Answer 23

Skin scrapings should be taken from the scaly edge of the lesion