A 5 year old boy has been irritable for the past 2 days and has - ProProfs
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A 5-year-old boy has been irritable for the past 2 days and has complained of an earache for the past 5 days. On physical examination, he has a temperature of 39.1°C. Laboratory examination of the CSF from a lumbar puncture shows numerous neutrophils, slightly increased protein level, and decreased glucose concentration. On Gram staining of the CSF, which of the following is most likely to be seen microscopically?



A. No organisms
B. Gram-positive cocci
C. Gram-negative diplococci
D. Short Gram-positive rods
E. Short Gram-positive rods
Asked by Theo on Sep 09, 2016

This question is part of

Pathology Review ch 28 CNS prt 3

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1 Answer

John Smith

John Smith

Answered on Sep 09, 2016

Gram-positive cocci-(b) this patient has acute bacterial meningitis. in his age group, the most common etiologic organism is now streptococcus pneumoniae, a gram-positive coccus. the number of cns infections with haemophilus influenzae, a gramnegative bacillus, in this age group has decreased because of widespread immunization. pneumococci also are likely to be seen in an adult. the gram-negative diplococci of neisseria meningitidis are seen in young adults. the short, grampositive rods of listeria monocytogenes appear sporadically or in epidemics caused by food contamination. the gramnegative bacilli of escherichia coli are most often seen in neonates. with these clinical and csf features, it would be unusual if bacteria were not present in the csf. bp7 825827bp8 874875pbd7 13691370pbd8 12991300
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