Multiple Choice Questions (MCQ)

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Category: Medicine--->Infectious Disease
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Question 1# Print Question

A 30-year-old male patient complains of fever and sore throat for several days. The patient presents to you today with additional complaints of hoarseness, difficulty breathing, and drooling. On examination, the patient is febrile and has inspiratory stridor. Which of the following is the best course of action?

A. Begin outpatient treatment with ampicillin
B. Begin outpatient treatment with ampicillin
C. Admit to intensive care unit and obtain otolaryngology consultation
D. Schedule for chest x-ray
E. Obtain Epstein-Barr serology

Question 2# Print Question

A 70-year-old patient with long-standing type 2 diabetes mellitus presents with complaints of pain in the left ear with purulent drainage. On physical examination, the patient is afebrile. The pinna of the left ear is tender, and the external auditory canal is swollen and edematous. The white blood cell count is normal. Which of the following organisms is most likely to grow from the purulent drainage?

A. Pseudomonas aeruginosa
B. Streptococcus pneumoniae
C. Candida albicans
D. Haemophilus influenzae
E. Moraxella catarrhalis

Question 3# Print Question

A 25-year-old male student presents with the chief complaint of rash. He denies headache, fever, or myalgia. A slightly pruritic maculopapular rash is noted over the abdomen, trunk, palms of the hands, and soles of the feet. Inguinal, occipital, and cervical lymphadenopathy is also noted. Hypertrophic, flat, wartlike lesions are noted around the anal area. Laboratory studies show the following: 

  • Hct: 40%
  • Hgb: 14 g/dL
  • WBC: 13,000/µL
  • Diff: 50% segmented neutrophils, 50% lymphocytes

Which of the following is the most useful laboratory test in this patient?

A. Human papillomavirus (HPV) serology
B. Venereal Disease Research Laboratory (VDRL) test
C. Nucleic acid amplification test for Chlamydia
D. Blood cultures
E. Biopsy of perianal lesions

Question 4# Print Question

A 35-year-old previously healthy man develops cough with purulent sputum over several days. On presentation to the emergency room, he is lethargic. Temperature is 39°C, pulse 110, and blood pressure 100/70. He has rales and dullness to percussion at the left base. There is no rash. Flexion of the patient’s neck when supine results in spontaneous flexion of hip and knee. Neurologic examination is otherwise normal. There is no papilledema. A lumbar puncture is performed in the emergency room. The cerebrospinal fluid (CSF) shows 8000 leukocytes/µL, 90% of which are polys. Glucose is 30 mg/dL with a peripheral glucose of 80 mg/dL. CSF protein is elevated to 200 mg/dL. CSF Gram stain is pending. Which of the following is the correct treatment option?

A. Begin acyclovir for herpes simplex encephalitis
B. Obtain emergency MRI scan before beginning treatment
C. Begin ceftriaxone and vancomycin for pneumococcal meningitis
D. Begin ceftriaxone, vancomycin, and ampicillin to cover both pneumococci and Listeria
E. Begin high-dose penicillin for meningococcal meningitis

Question 5# Print Question

. A 29-year-old man presents with a 4-day history of fever, headache with retro-orbital pain, severe musculoskeletal and lumbar back pain and rash. The symptoms began 3 days after he returned from a 2-week vacation to the Caribbean islands. The rash developed on his face before spreading over his trunk and extremities. The patient reports receiving appropriate vaccination, including hepatitis A virus vaccine, hepatitis B virus vaccine, and typhoid vaccine. Laboratory tests reveal normal kidney and liver function tests but leukopenia and thrombocytopenia. Which of the following organisms is the most likely cause of this infection?

A. Leptospira
B. Plasmodium falciparum
C. Salmonella typhi
D. Dengue virus
E. Hepatitis A virus

Category: Medicine--->Infectious Disease
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