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[MBBS 0822] AUGUST 2022 Sub. Code :6066
M.B.B.S. DEGREE EXAMINATION
(For the candidates admitted from the Academic Year 2019-2020)
SECOND YEAR (SUPPLEMENTARY (CBME)
PAPER III ? MICROBIOLOGY ? II
Q.P. Code: 526066
Time: Three hours Maximum : 100 Marks (80 Theory + 20MCQs)
Answer all the Questions
I. Essay:
(2 x 15 = 30)
1. A 65 year old male patient admitted in the hospital with history of fever, sore
throat, head ache, body pain and loss of taste and smell. Symptomatic treatment
was given. After 2 days, he developed difficulty in breathing, his oxygen
saturation was <90 %. Blood investigations like CRP, D-dimer and IL-6 were
elevated. CT Chest shows ground glass opacities. Patient was treated with high
flow oxygen, steroid, antibiotics and antiviral agents.
a) What is the clinical condition?
b) Describe in detail about transmission, pathogenesis and clinical manifestations
of this condition?
c) Write in detail about microbiological and non-microbiological investigations of
this conditions?
d) Add note on prevention and control of this clinical condition?
2. A 17-year-old boy presented with bloody diarrhea with mucus and pus cells,
colicky abdominal pain, fever, and prostration. The wet mount examination of the
stool sample was performed which showed trophozoites of 5?20 m, actively
motile, with fingerlike pseudopodia. Inside the trophozoites, the ingested RBCs
present?
a. What is the etiological diagnosis?
b. Describe the pathogenesis and clinical manifestations produced?
c. What are the various diagnostic modalities?
d. How will you treat this condition?
II. Write Short notes on:
(10 x 5 = 50)
1. An 18-year old female presented with high-grade fever which rises every third
day with chills and rigor. Her blood sample was subjected to a rapid diagnostic test
which revealed positive for Plasmodium vivax. Discuss the laboratory diagnosis
and treatment for the same?
2. A 40-year-old male presented with history of loss of appetite, malaise and
jaundice of 2 months duration. On examination, there was icterus, hepatomegaly
and tenderness in the right hypochondriac region. He gave a history of blood
transfusion in the past. On laboratory examination, he was found to be positive for
HBsAg.
... 2 ...
... 2 ...
a. What is the most probable etiological diagnosis?
b. Discuss in detail about the various viral markers, their laboratory diagnosis and
prophylaxis of this condition.
3. A 25-year-old male with history of multiple sex partners is admitted with
complaints of unexplained fever, progressive loss of weight, persistent diarrhea and
generalized lymphadenopathy for the past 6 months.
a. What is the most probable diagnosis?
b. Discuss the pathogenesis and laboratory diagnosis of the above condition.
4. Rajesh, a 28-year-old male, was admitted to the hospital with complaints of
evening rise of temperature, night sweat, loss of weight, loss of appetite and
chronic cough with expectoration for the past 6 months. Sputum examination
revealed long, slender and beaded acid-fast bacilli.
a. What is your provisional diagnosis?
b. Describe the laboratory diagnosis and drug resistance that occur in the
etiological agent.
5. A 35 year old male with c/o hard painless penile ulcer attends STD OP. Blood
sample drawn and sent for VDRL test. The laboratory reports VDRL test as
Reactive. How will you counsel & what advice you will give to the patient.
6. Enlist the opportunistic fungal infection. Write in detail about the pathogenesis,
clinical features and laboratory diagnosis of aspergillosis?
7. A 28-year-old female was admitted with high grade fever, vomiting, flank pain
with increased frequency of micturition for the past 3 days. What is your clinical
diagnosis, etiological agents and laboratory diagnosis?
8. A 25-year-old Australian visited his local doctor complaining of difficulty in
swallowing liquids, loss of appetite and restlessness. He had a travel history to
India one month back and did mention being bitten by a street dog.
a. What is the most probable etiological diagnosis?
b. Discuss the laboratory diagnosis and the vaccines available for human use.
9. List the bacterial organism causing pyogenic meningitis. Write in detail about
clinical manifestations. laboratory diagnosis and treatment of pyogenic
meningitis?
10. A 29-year-old female came to casualty with complaints of high-grade fever, severe
joint pain, back pain and myalgia. Gradually, she developed petechial rashes over
the body. On examination, she was found to have jaundice, hepatomegaly and a
low platelet count (30,000/cm), Raised hematocrit (packed cell volume) by 20%.
A tourniquet test done over the cubital fossa demonstrated 25 petechial
spots/square inch area. On inquiry, she told that she has been bitten by the
mosquitoes.
a. What is the clinical diagnosis and how is this disease transmitted?
b. How will you confirm the diagnosis in the laboratory?
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[MBBS 0822]
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