Table 1.
The Antimicrobial Susceptibility of CR-ECL and CS-ECL
| Antibiotics | CR-ECL (n=85) | CS-ECL (n=170) | P-value | ||||
|---|---|---|---|---|---|---|---|
| S | I | R | S | I | R | ||
| Ampicillin | 0 (0) | 2 (2.4) | 83 (97.6) | 37 (21.8) | 6 (3.5) | 127 (74.7) | <0.001 |
| Ampicillin-sulbactam | 5 (5.9) | 1 (1.2) | 79 (92.9) | 72 (42.3) | 4 (2.4) | 94 (55.3) | <0.001 |
| Piperacillin-tazobactam | 46 (54.1) | 3 (3.5) | 36 (42.4) | 143 (84.1) | 7 (4.1) | 20 (11.8) | <0.001 |
| Ceftriaxone | 1 (1.2) | 0 (0) | 84 (98.8) | 106 (62.3) | 3 (1.8) | 61 (35.9) | <0.001 |
| Ceftazidime | 1 (1.2) | 1 (1.2) | 83 (97.6) | 113 (66.4) | 4 (2.4) | 53 (31.2) | <0.001 |
| Cefepime | 23 (27) | 6 (7.1) | 56 (65.9) | 141 (82.9) | 8 (4.7) | 21 (12.4) | <0.001 |
| Cefoxitin | 0 (0) | 0 (0) | 85 (100) | 6 (3.5) | 4 (2.4) | 160 (94.1) | 0.023 |
| Aztreonam | 6 (7) | 2 (2.4) | 77 (90.6) | 78 (45.9) | 11 (6.5) | 81 (47.6) | <0.001 |
| Ciprofloxacin | 43 (50.6) | 5 (5.9) | 37 (43.5) | 145 (85.3) | 3 (1.8) | 22 (12.9) | <0.001 |
| Levofloxacin | 54 (63.5) | 8 (9.4) | 23 (27.1) | 156 (91.7) | 2 (1.2) | 12 (7.1) | <0.001 |
| Gentamicin | 27 (31.8) | 7 (8.2) | 51 (60.0) | 146 (85.8) | 5 (3.0) | 19 (11.2) | <0.001 |
| Tobramycin | 22 (25.9) | 9 (10.6) | 54 (63.5) | 146 (85.8) | 4 (2.4) | 20 (11.8) | <0.001 |
| Amikacin | 68 (80.0) | 6 (7.1) | 11 (12.9) | 165 (97.0) | 1 (0.6) | 4 (2.4) | <0.001 |
| Ertapenem | 0 (0) | 0 (0) | 85 (100) | 170 (100) | 0 (0) | 0 (0) | <0.001 |
| Imipenem | 26 (30.6) | 15 (17.6) | 44 (51.8) | 170 (100) | 0 (0) | 0 (0) | <0.001 |
| Meropenem | 36 (42.4) | 13 (15.2) | 36 (42.4) | 170 (100) | 0 (0) | 0 (0) | <0.001 |
| Tigecycline | 84 (98.8) | 0 (0) | 1 (1.2) | 170 (100) | 0 (0) | 0 (0) | 0.156 |
| Polymyxin B | 84 (98.8) | 0 (0) | 1 (1.2) | 170 (100) | 0 (0) | 0 (0) | 0.156 |
Note: Bold face indicates values that are significant (P<0.05).
Abbreviations: S, susceptible; I, intermediate-resistant; R, resistant.