36. A spinal fluid from nal fluid from a patient contained 20,ooo WBCs per micro
ID: 271132 • Letter: 3
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36. A spinal fluid from nal fluid from a patient contained 20,ooo WBCs per microliter: markedly elevated prot low glucose level. Gram stain showed gram negative cocco bacilli. From the fore-going information which of the following is likely? A. Viral meningitis due to COxsackie virus. B. Bacterial meningitis due to Streptococcus pneumoniae. C. Bacterial meningitis due to Neisseria meningitidis D. Bacterial meningitis due to Haemophilus influenzae. E. Viral meningitis due to S agalactiae 37. Which of the foll owing common causes of health care-associated infections is an environmental pathogen kenown to grow readily in nutrient-poor solutions? A. Escherichia. coli B. Staphylococcus aureus C. Enterobacter aerogenes 38. Which of the following is false about Klebsiella pneumoniae? A. It is a gram negative, non-motile rod B. It can cause tissue necrosis and formation of lung abscesses C. It has capsule as virulence factor D. It is a leading cause of aspiration pneumonia E. It is an anaerobic spore former 39. In the name "E. coli 0157:H7", the "0157" refers to the type of O antigen present in the strain. Just from this information it can be inferred that E. coli A. Has a capsule B. Is gram negative C. Is facultative anaerobic D. Is a rod 40. The infection "Mumps" is A. An acute viral illness that preferentially attacks the parotid glands 8. An acute bacterial illness that preferentially attacks the parotid glands C. Transmissible through insect bites D. Is a mild disease treatable with antibiotics within the first few days 1. All of the following are true about Helicobacter pylori, EXCEPT A. It is a bacteria with sheathed flagella B. It is non-motile C. It will test positive for urease activity D. It is strongly linked to the causation of stomach ulcer E. It is microaerophilic 2. The disease most feared to develop after bite by a dog, raccoon or bat is A.tetanus. B.rabies. C.gas gangrene. D. actinomycosis.Explanation / Answer
36. Gram-staining indicates that Gram-negative cocco-bacilli. Haemophilus influenzae is a Gram-negative cocco-bacilli, human pathogen. Cerebrospinal fluid analysis of children affected with Haemophilus influenzae showed that WBC's level increased for 24 hrs and then declined. Glucose level was lower; however normal level were achieved within 48 hrs and also protein concentration was elevated which was declined steadily throughout the treatment. These observations indicate that correct option is D.
37. Pseudomonas aeruginosa is opportunistic nosocominal (health-care associated infections) pathogen which grows readily on nutrient poor conditions. Hence, option D is correct answer.
38. Klebsiella pneumoniae is gram-negative, non-motile bacteria associated with health-care associated infections. It spreads through person to person and caused tissue necrosis and lung abscesses. It has capsule antigen which is a virulence factor and leading causative agent of Klebsiella pneumonia. It is aerobic and anaerobic non-spore former. Hence correct option is E.
39. E. coli O157:H7 is a shiga-toxin producing bacteria. O157 means somatic antigen (O-polysaccharide) present in outer membrane of bacterium and H7 means flagellar antigen. As mentioned O157 is part of lipopolysaccharide present outside the cell. It infers that bacteria has capsule. Hence correct option is A.
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