Deck 53: Infections of the Eyes, Ears, and Sinuses

Question 1

What is the proper specimen for culture and identification of the agent of acute sinusitis?

A)Aspirated material that has been collected by puncture of the maxillary sinus
B)Drainage material found in the upper respiratory passages that has been collected with a swab
C)Coughed up sinus drainage collected in a sterile cup
D)All of the above are correct.

Answer 1

A
In most cases, a diagnosis can be made on the basis of physical findings, history, radiograph studies, and other imaging techniques such as magnetic resonance imaging. However, if a laboratory diagnosis is needed, an otolaryngologist obtains the material from the maxillary sinus by puncture and aspiration or during surgery. Sinus drainage is unacceptable for smear or culture because this material will be contaminated with aerobic and anaerobic normal respiratory flora.

Question 2

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Blepharitis

Answer 2

B
Bacteria, viruses, and occasionally lice can cause blepharitis. Although occasionally isolated from surfaces surrounding the healthy eye, Staphylococcus aureus and S. epidermidis are the most common infectious cause of blepharitis in developed countries.

Question 3

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Conjunctivitis in children

Answer 3

A
In children, the most common causes of bacterial conjunctivitis are Haemophilus influenzae, S. pneumoniae, and perhaps S. aureus. S. pneumoniae and H. influenzae (especially aegyptius subsp.) have been responsible for epidemics of conjunctivitis.

Question 4

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Trachoma

Question 5

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Endophthalmitis

Question 6

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Keratitis

Question 7

The organism(s) that can be encountered in the conjunctival sac that exist as indigenous flora is(are)

A)Staphylococcus epidermidis.
B)Lactobacillus spp.
C)Staphylococcus aureus.
D)All of the above are correct.
E)None of the above are correct.

Question 8

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Keratitis

Question 9

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Orbital cellulitis

Question 10

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Canaliculitis

Question 11

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Dacryoadenitis

Question 12

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Orbital cellulitis

Question 13

The most common etiologic agents in acute otitis media in children include

A)Klebsiella pneumococci.
B)Haemophilus influenzae.
C)Streptococcus agalactiae.
D)Moraxella catarrhalis.

Question 14

Match the condition with its definition.
a.An acute infection of the orbital contents most often caused by bacteria
b.Inflammation of the lacrimal canal
c.Infection of the lacrimal gland characterized by pain of the upper eyelid with erythema
d.Infection of the cornea
Canaliculitis