Table 2 Antimicrobial susceptibility profiles of S. maltophilia before and after exposure to sub-inhibitory concentrations of sodium hypochlorite
Antibiotic | No. of isolates of S. maltophilia (%) | p-value | |||||
|---|---|---|---|---|---|---|---|
Before exposure with sodium hypochlorite | After exposure with sodium hypochlorite | ||||||
Sensitive | Intermediate | Resistance | Sensitive | Intermediate | Resistance | ||
Trimethoprim-sulfamethoxazole | 83 (85.6) | 4 (4.1) | 10 (10.3) | 83 (85.6) | 4 (4.1) | 10 (10.3) | 1 |
Meropenem | 0 (0) | 0 (0) | 97 (100) | 0 (0) | 0 (0) | 97 (100) | 1 |
Imipenem | 0 (0) | 0 (0) | 97 (100) | 0 (0) | 0 (0) | 97 (100) | 1 |
Levofloxacin | 95 (97.9) | 2 (2.1) | 0 (0) | 95 (97.9) | 2 (2.1) | 0 (0) | 1 |
Minocycline | 86 (88.7) | 10 (10.3) | 1 (1) | 86 (88.7) | 10 (10.3) | 1 (1) | 1 |
Ceftazidime | 23 (23.7) | 12 (12.4) | 62 (63.9) | 17 (17.5) | 17 (17.5) | 63 (64.9) | 0.019 |
Tigecycline | 84 (86.6) | 12 (12.4) | 1 (1) | 84 (86.6) | 12 (12.4) | 1 (1) | 1 |
Chloramphenicol | 59 (60.8) | 32 (33) | 6 (6.2) | 50 (51.5) | 35 (36.1) | 12 (12.4) | 0.028 |
Ticarcillin/clavulanate | 38 (39.2) | 34 (35.1) | 25 (25.8) | 25 (25.8) | 37 (38.1) | 35 (38.1) | 0.009 |