Scenario An abscess (carbuncle) which had developed on a patient\'s thigh was su
ID: 173311 • Letter: S
Question
Scenario
An abscess (carbuncle) which had developed on a patient's thigh was
surrounded by a zone of redness approximately ten centimeters in
diameter. The surgeon examining this patient advised surgical
intervention and prescribed methicillin for twelve hours prior to
excision of the carbuncle. The carbuncle was excised, and a purulent
specimen was submitted to the clinical microbiology laboratory for
identification of the causative organism. Colonies of the suspect
organism grew out on a blood agar following overnight incubation at
37C.
The colonies seen on the blood plate are ____ hemolytic.
b
eta hemolytic control
on SBAP
non-hemolytic control
on
SBAP
Question 1
The colonies seen on the blood plate are ____ hemolytic.
A. ALPHA
B. BETA
C. DELTA
D. GAMMA
E. NON-HEMOLYTIC
Explanation / Answer
Answer B is correct
the colonies seen on bood plate are beta hemolytic
because beta hemolytic are always do compleate lysis of bood. and we always look for negative control beacuse in negative control show no effect on blood lysis.
and possitive control of the this experiment will beta hemolytic control on SBAP
which will show result equvalent blood lysis in test sample (beta hemolytic are always do compleate lysis of bood).
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