The drugs you evaluated in your disc susceptibility tests have different potencies (see table C1; disc content). Which ONE of the following options, based on the laboratory data alone, is the most approapriate in the treatment of a patient with a UTI ? Select one: A. All the above drugs (A, B, C and D) could be considered B. Trimethoprim (zone size 30 mm) C. Ampicillin (zone size 25 mm) D. Amoxicillin (zone size 15 mm) E. Cephalexin (zone size 25 mm)
The drugs you evaluated in your disc susceptibility tests have different potencies (see table C1; disc content). Which ONE of the following options, based on the laboratory data alone, is the most approapriate in the treatment of a patient with a UTI ? Select one: A. All the above drugs (A, B, C and D) could be considered B. Trimethoprim (zone size 30 mm) C. Ampicillin (zone size 25 mm) D. Amoxicillin (zone size 15 mm) E. Cephalexin (zone size 25 mm)
Basic Clinical Laboratory Techniques 6E
6th Edition
ISBN:9781133893943
Author:ESTRIDGE
Publisher:ESTRIDGE
Chapter7: Basic Clinical Microbiology
Section7.1: Introduction To Clinical Microbiology
Problem 13RQ
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Question
The drugs you evaluated in your disc susceptibility tests have different potencies (see table C1; disc content). Which ONE of the following options, based on the laboratory data alone, is the most approapriate in the treatment of a patient with a UTI ?
Select one:
A.
All the above drugs (A, B, C and D) could be considered
B.
Trimethoprim (zone size 30 mm)
C.
Ampicillin (zone size 25 mm)
D.
Amoxicillin (zone size 15 mm)
E.
Cephalexin (zone size 25 mm)
Transcribed Image Text:Table C1: Interpretative values for disc susceptibility evaluation of coliforms, E. coli and Proteus mirabilis to antimicrobials
commonly used to treat urinary tract infections
Antibiotic
Amoxicillin
Ampicillin
Cephalexin
Ciprofloxacin
Co-amoxiclave
Fosfomycing.h
Mecillinam
Nalidixic acid
Nitrofurantoin
Norfloxacin
Trimethoprim
MIC BP (mg/L)
R>
32
32
32
4
32
128
8
16
32
4
2
S≤
32
32
32
4
32
128
8
16
32
4
2
Disc content
(µg)
25
25
30
1
20/10
200/50
10
30
200
2
2.5
R<
11
11
-
19
11
17
15
16
Coliforms
I
-
-
Interpretation of zone diameters (mm)
E. coli
2_12 12-20 12--18-16 17
Sz
R≤
11
11
15
19
11
19
13
17
19
15
16
Sz R≤
12 12 16 20 12 20 14 18 20 16 17
11
11
11
19
11
33
14 13
18 17
15
16
Pr. mirabilis
|
212 12 12 20 12 34 14 18-16 17
Sz
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