Microbiological Profile and Drug Resistance Analysis of Postoperative Infections following Orthopedic Surgery: A 5-Year Retrospective Review
Table 3
Resistance pattern of gram-positive bacteria to antibiotic agents.
Antibiotics
Staphylococcus aureus
CoNS
Enterococcus spp.
Diphtheroid bacilli
Bacillus spp.
n = 64
n = 40
n = 10
n = 1
n = 1
Ampicillin
36 (91.7)
28 (85.7)
8 (37.5)
1 (0)
1 (0)
Levofloxacin
61 (9.8)
40 (45)
8 (75)
1 (100)
1 (0)
Gentamicin
61 (8.2)
39 (33.3)
7 (71.4)
1 (0)
1 (0)
Ciprofloxacin
32 (12.5)
11 (45.5)
4 (100)
—
—
Vancomycin
62 (1.6)
40 (0)
8 (0)
1 (0)
1 (0)
Oxacillin
62 (77.4)
40 (87.5)
—
1 (100)
1 (100)
Erythromycin
63 (41.3)
40 (55)
8 (75)
1 (100)
1 (100)
Clindamycin
62 (29)
40 (30)
1 (100)
1 (100)
1 (100)
Linezolid
26 (0)
11 (0)
5 (20)
—
—
Tigecycline
53 (1.9)
36 (8.3)
6 (16.7)
1 (0)
1 (0)
Co-trimoxazole
31 (25.8)
11 (18.2)
1 (0)
—
—
Nitrofurantoin
19 (0)
8 (0)
4 (0)
—
—
Benzylpenicillin
32 (96.9)
11 (100)
4 (50)
—
—
Moxifloxacin
30 (6.7)
11 (18.2)
1 (100)
—
—
Tetracycline
31 (25.8)
10 (20)
4 (100)
—
—
Chloramphenicol
34 (2.9)
30 (13.3)
7 (14.3)
1 (0)
1 (100)
Quinupristin
9 (0)
1 (0)
1 (100)
—
—
Amoxicillin/clavulanic acid
2 (100)
—
1 (0)
—
—
Data are represented in n (%); data were calculated based on 168 identified bacteria (in 9 cases more than one pathogen was found); CoNS, coagulase-negative Staphylococci; spp., species.
