|
Antimicrobial class
|
Antimicrobial agent (disk content, μg or U)
|
Critical value (mm)
|
Sample number(%)
|
|---|
|
S
|
I
|
R
|
S
|
I
|
R
|
|---|
|
Aminoglycosides
|
Kanamycin(30)
|
≥18
|
14–17
|
≤13
|
26 (86.7)
|
2 (6.7)
|
2 (6.7)
|
|
Gentamicin(10)
|
≥15
|
13–14
|
≤12
|
28 (93.3)
|
0
|
2 (6.7)
|
|
Streptomycin(10)
|
≥15
|
12–14
|
≤11
|
19 (63.3)
|
9 (30)
|
2 (6.7)
|
|
Fluoroquinolones
|
Levofloxacin(5)
|
≥19
|
16–18
|
≤15
|
28 (93.3)
|
2 (6.7)
|
0
|
|
Ciprofloxacin(5)
|
≥21
|
16–20
|
≤15
|
22 (73.3)
|
7 (23.3)
|
1 (3.3)
|
|
Folate pathway inhibitors
|
Sulfamethoxazole /trimethoprim (23.75/1.25)
|
≥16
|
11–15
|
≤10
|
30 (100)
|
0
|
0
|
|
β-lactam group
|
Sulbactam/ampicilin(10/10)
|
≥15
|
12–14
|
≤11
|
29 (96.7)
|
1 (3.3)
|
0
|
|
Macrolides
|
Erythromycin(15)
|
≥23
|
14–22
|
≤13
|
27 (90)
|
2 (6.7)
|
1 (3.3)
|
|
Ansamycins
|
Rifampin(5)
|
≥20
|
17–19
|
≤16
|
22 (73.3)
|
6 (20)
|
2 (6.7)
|
|
Lincosamides
|
Clindamycin(2)
|
≥21
|
15–20
|
≤14
|
4 (13.3)
|
7 (23.3)
|
19 (63.3)
|
|
Tetracyclines
|
Tetracycline(30)
|
≥19
|
15–18
|
≤14
|
29 (96.7)
|
0
|
1 (3.3)
|
|
Doxycycline(30)
|
≥16
|
13–15
|
≤12
|
29 (96.7)
|
0
|
1 (3.3)
|
|
Glycopeptides
|
Vancomycina(30)
|
≥17
|
15–16
|
≤14
|
25 (83.3)
|
3 (10)
|
2 (6.7)
|
|
Phenicols
|
Chloramphenicol (30)
|
≥18
|
13–17
|
≤12
|
28 (93.3)
|
2 (6.7)
|
0
|
|
β-Lactam
|
Ampicillin
|
<2 μg/mL
|
–
|
≥2 μg/mL
|
30 (100.0)
|
0 (0)
|
0 (0)
|
|
β-Lactam
|
Penicillin
|
<2 μg/mL
|
–
|
≥2 μg/mL
|
30 (100.0)
|
0 (0)
|
0 (0)
|
- a: The critical values of Enterococcus; the critical values of Staphylococcus; S susceptible, I intermediate, R resistant
