Mikeland
Forum Senior
Topics: 24
Posts: 109
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A patient with colorectal cancer develops septicemia complicated by endocarditis. Which of the following laboratory findings would be most conclusive in the identification of the most like pathogen?
A Beta hemolysis
B CAMP test positivity
C Glycerol teichoic acid cell wall
D Pyrrolidinyl arylamidase positivity
E Solubility in bile
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| monam84
Forum Senior
Topics: 35
Posts: 135
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E- solubility in bile (strep bovis? Group D strep)
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| kingusmle
Forum Elite
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Posts: 270
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Group D Strep bovis is a normal flora of colon andcauses endocarditis in patients with carcinoma of colon.this association is infact so strongthat pts with s bovis shud be investigated for colonic carcinoma
group D strep hydrolyze esculin in the presence of bile thatis they produce black pigment on bile esculin agar....
beta hemolysis is of no use coz bcoz group d is alpha hemolytic,camp test positive in gm negative enterotoxin watery,non bloody diarrhea,glycerol teichoic acids are rarely used for labs
Pyrrolidinyl arylamidase positivity ..whats that ,can someone plz explain this
Edited by kingusmle on 05/01/07 - 12:01 AM
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| me007
Forum Guru
Topics: 72
Posts: 803
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bile soluble is strep pneumo.
S. bovis can grow on bile
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| Mikeland
Forum Senior
Topics: 24
Posts: 109
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When I fisrt saw it I thought in E, but, If you double check, knowing that they are talking about S. bovis, the answer is right there. (basic concep... Gram + and Gram -). Try again now with this tips.
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| virgola82
Forum Guru
Topics: 85
Posts: 348
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actually i said E initially, but you are right... C
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| Mikeland
Forum Senior
Topics: 24
Posts: 109
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Bang! you did it
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| Mikeland
Forum Senior
Topics: 24
Posts: 109
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Good Q asking basic concepts
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| monam84
Forum Senior
Topics: 35
Posts: 135
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im sorry but i still dont understand, wouldnt a bile test help you narrow it down further?
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| keepgoing
Forum Guru
Topics: 62
Posts: 1,673
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i think c....
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| keepgoing
Forum Guru
Topics: 62
Posts: 1,673
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mona basic cell structure of gram positive is best answer where option e will juz help us eliminate s.pne not giving us exact what pathogen possess which we know we had s.bovis in mind...
yes good question asked in twisted way
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| Mikeland
Forum Senior
Topics: 24
Posts: 109
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Really good
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