(Study Guide & Practice
Questions)
Chapters Covered: ENT • Endocrine •
Renal • Infectious Disease
,CHAPTER 4 — EYE, EAR, NOSE & THROAT PROBLEMS
Eye, Ear, Nose & Throat (ENT) Problems
Conjunctivitis
Q1. A 19-year-old man presents with a red, irritated right eye for 48 hours with eyelids
"stuck together" on waking. Exam reveals injected palpebral and bulbar conjunctiva,
reactive pupils, and purulent right eye discharge. This presentation is most consistent
with:
A. suppurative conjunctivitis.
B. viral conjunctivitis.
C. allergic conjunctivitis.
D. mechanical injury.
Answer: A. Suppurative conjunctivitis.
Purulent discharge + unilateral involvement + eyelid crusting = bacterial (suppurative)
conjunctivitis. Viral typically presents with watery discharge & URI symptoms.
Q2. A 19-year-old woman has bilaterally itchy, red eyes with tearing occurring
intermittently throughout the year, accompanied by rope-like eye discharge and clear
nasal discharge. This is most consistent with conjunctival inflammation caused by a(n):
A. bacterium.
B. virus.
C. allergen.
D. injury.
Answer: C. Allergen.
Bilateral, itchy, rope-like discharge + seasonal pattern + concurrent clear rhinorrhea =
allergic conjunctivitis (IgE-mediated).
Q3. Common causative organisms of acute suppurative conjunctivitis include all of the
following
EXCEPT:
A. Staphylococcus aureus.
B. Haemophilus influenzae.
C. Streptococcus pneumoniae.
D. Pseudomonas aeruginosa.
Answer: D. Pseudomonas aeruginosa.
, Pseudomonas causes otitis externa/malignant otitis externa, NOT typical community-
acquired conjunctivitis. Common bacteria: S. aureus, H. influenzae, S. pneumoniae.
Q4. Treatment options in suppurative conjunctivitis include all of the following
ophthalmic preparations
EXCEPT:
A. polymyxin B plus trimethoprim.
B. levofloxacin.
C. polymyxin alone.
D. azithromycin.
Answer: C. Polymyxin alone.
Polymyxin alone lacks adequate gram-positive coverage. Effective options: FQ eye
drops (gatifloxacin, levofloxacin, moxifloxacin), polymyxin B + trimethoprim,
azithromycin.
Q5. Treatment options in acute and recurrent allergic conjunctivitis include all of the
following EXCEPT: A. cromolyn ophthalmic drops.
B. oral antihistamines.
C. ophthalmological antihistamines.
D. corticosteroid ophthalmic drops.
Answer: D. Corticosteroid ophthalmic drops.
Corticosteroid eye drops are NOT used for allergic conjunctivitis due to risk of IOP
elevation, cataract, and secondary infections. Use antihistamines/mast cell stabilizers
instead.
Q6. The most common virological cause of conjunctivitis is:
A. coronavirus.
B. adenovirus.
C. rhinovirus.
D. human papillomavirus.
Answer: B. Adenovirus.
Adenovirus is the leading cause of viral conjunctivitis (pink eye). Self-limiting over 2–3
weeks. No antibiotic needed.
Q7. Treatment of viral conjunctivitis can include:
A. moxifloxacin ophthalmic drops.
B. polymyxin B ophthalmic drops.
C. oral acyclovir.
D. no antibiotic therapy needed.