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Flashcards in Microbiology Deck (50)
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1

What is the common bacterial causes of conjunctivitis in adults?

Staph aureus
Strep pneuomiae

2

What is the common bacterial causes of conjunctivitis in children?

H flu

3

What is different about bacterial conjunctivitis in neonates?

Must be referred to ophthalmology due to possibility of contraction during birth

4

Which two bacteria is particularly worrying in a neonatal conjunctivitis?

N gonorrhoeae
Chlamydia trachomatis

5

What are common symptoms of bacterial conjunctivitis?

Hazy vision
Sticky discharge- often at night
Pussy exudates
Redness
Gritty feeling

6

What kind of swabs are taken for conjunctivitis?

Bacterial
Viral
Chlamydia

7

What topical antibiotic is usually given?

Chloramphenical

8

What are the pros/cons of drops vs ointments?

Drops need to be kept in fridge
Drops difficult to keep sterile
Ointment harder to apply but gives soothing effect

9

When must chloramphenical be avoided?

If history of aplastic anaemia

10

What are the signs of aplastic anaemia, clinically?

Anaemia
Low WBC
Low platelets

11

If the eye gets worse on abx treatment in bacterial conjunctivitis what must be considered?

An allergy to chloramphenical

12

What are the symptoms of adenoviral conjunctivitis?

Gritty feeling
Red eyes
watery discharge
Starts with URTI

13

What is the treatment for adenoviral conjunctivitis?

Self resolving
But symptomatic treatment of antihistamine plus artificial tears

14

What is important to remember with pink eye (adenovirus conjunctivitis) ?

It is contagious.
Spread by share of eyeliners

15

Which other two viruses commonly cause conjunctivitis?

Herpes zoster
Herpes simplex

16

In a patient with conjunctivitis and also urethritis/vaginitis, what must be considered?

Chlamydial infection

17

How is chlamydial conjunctivitis treated?

Topical and oral azithromycin
Further STI screening

18

What ethical dilemma might occur when testing for chlamydia?

Need to tell patient what you're testing for and ask for contact number
Contact tracing if positive

19

What sign is present in chlamydial conjunctivitis?

Wet rice grains in internal eyelid

20

What is keratitis?

Inflammation of cornea

21

What is a hypopyon?

Level of white blood cells seen in the iris

22

What bacteria are to blame for keratitis?

Staph aureus
Strep pneumoniae
H flu
Staph epidermidis

23

What is often seen in bacterial keratitis?

Ulcer

24

What is the first step in treatment of bacterial keratitis?

Corneal scrape

25

What does the treatment for bacterial keratitis consist of?

Admission.
Hourly drops

26

What condition presents with a dendritic ulcer?

Herpetic keratitis

27

What should never be given for herpetic keratitis?

Steroids.
Steroids can cause corneal melt

28

What does recurrent herpetic keratitis result in?

Reduced corneal sensation

29

What kind of viral keratitis can steroids be given for?

Adenoviral keratitis

30

What sign may be seen in adenoviral keratitis?

Subepithelial infiltrates