Table 3.
Proportions of antimicrobial resistance among Enterobacterales that were most frequently isolated from bloodstream
| Antimicrobial drug | Enterobacterales spp. (99) | Escherichia coli (53) | Klebsiella pneumoniae (26) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n (%) | S | I | R | Total | S | I | R | Total | S | I | R | Total |
| Ampicillin | 13 (13.7) | 0 (0) | 82 (86.3) | 95 (100) | 13 (26) | 0 (0) | 37 (74) | 50 (100) | * | * | * | * |
| Ampicillin sulbactam | 37 (48.7) | 0 (0) | 39 (51.3) | 76 (100) | 21 (45.6) | 0 (0) | 25 (54.4) | 46 (100) | 8 (40) | 0 (0) | 12 (60) | 20 (100) |
| Amoxicillin/Clavulanic acid | 36 (39.6) | 0 (0) | 55 (60.4) | 91 (100) | 23 (48.9) | 0 (0) | 24 (51) | 47 (100) | 10 (40) | 0 (0) | 15 (60) | 25 (100) |
| Piperacillin | 30 (33.4) | 2 (2.2) | 58 (64.4) | 90 (100) | 11 (22.9) | 1 (2.1) | 36 (75) | 48 (100) | 7 (27) | 1 (3.8) | 18 (69.2) | 26 (100) |
| Piperacillin tazobactam | 73 (74.5) | 4 (4.1) | 21 (21.4) | 98 (100) | 39 (75) | 4 (7.7) | 9 (17.3) | 52 (100) | 16 (61.5) | 0 (0) | 10 (38.5) | 26 (100) |
| Cefepime | 47 (50.5) | 3 (3.3) | 43 (46.2) | 93 (100) | 19 (38.9) | 2 (4) | 28 (57.1) | 49 (100) | 13 (50) | 0 (0) | 13 (50) | 26 (100) |
| Ceftriaxone | 52 (78.8) | 0 (0) | 14 (21.2) | 66 (100) | 19 (36.5) | 1 (2) | 32 (61.5) | 52 (100) | 13 (50) | 0 (0) | 13 (50) | 26 (100) |
| Cefuroxime | 54 (55.6) | 5 (5.2) | 38 (39.2) | 97 (100) | 18 (34) | 0 (0) | 35 (66) | 53 (100) | 13 (50) | 0 (0) | 13 (50) | 26 (100) |
| Cefoxitin | 47 (47.9) | 2 (2.1) | 49 (50) | 98 (100) | 33 (86.9) | 0 (0) | 5 (13.1) | 38 (100) | 17 (89.4) | 0 (0) | 2 (10.6) | 19 (100) |
| Ceftazidime | 34 (41.5) | 0 (0) | 48 (58.5) | 82 (100) | 24 (47) | 5 (9.9) | 22 (43.1) | 51 (100) | 13 (50) | 0 (0) | 13 (50) | 26 (100) |
| Imipenem | 89 (91.8) | 4 (4.1) | 4 (4.1) | 97 (100) | 53 (100) | 0 (0) | 0 (0) | 53 (100) | 21 (80.8) | 1 (3.8) | 4 (15.4) | 26 (100) |
| Meropenem | 94 (95) | 1 (1) | 4 (4) | 99 (100) | 53 (100) | 0 (0) | 0 (0) | 53 (100) | 21 (84) | 0 (0) | 4 (16) | 25 (100) |
| Ertapenem | 90 (92.8) | 0 (0) | 7 (7.2) | 97 (100) | 52 (100) | 0 (0) | 0 (0) | 52 (100) | 20 (76.9) | 0 (0) | 6 (23.1) | 26 (100) |
| Aztreonam | 49 (50.5) | 5 (5.2) | 43 (44.3) | 97 (100) | 20 (43.4) | 0 (0) | 26 (56.6) | 46 (100) | 13 (50) | 0 (0) | 13 (50) | 26 (100) |
| Ciprofloxacin | 52 (52.5) | 3 (3) | 44 (44.5) | 99 (100) | 25 (47.2) | 0 (0) | 28 (52.8) | 53 (100) | 11 (42.3) | 2 (7.7) | 13 (50) | 26 (100) |
| Amikacin | 93 (97.8) | 1 (1.1) | 1 (1.1) | 95 (100) | 49 (92.5) | 1 (1.9) | 3 (5.7) | 53 (100) | 25 (96.1) | 0 (0) | 1 (3.9) | 26 (100) |
| Gentamicin | 68 (68.7) | 0 (0) | 31 (31.3) | 99 (100) | 36 (67.9) | 0 (0) | 17 (32.1) | 53 (100) | 14 (53.8) | 0 (0) | 12 (46.2) | 26 (100) |
| Tigecycline | 67 (70.5) | 20 (21.1) | 8 (8.4) | 95 (100) | 48 (96) | 2 (4) | 2 (2) | 52 (100) | 11 (44) | 13 (52) | 1 (4) | 25 (100) |
| Sulfamethoxazole trimethoprim | 61 (61.6) | 0 (0) | 38 (38.4) | 99 (100) | 29 (54.7) | 0 (0) | 24 (45.3) | 53 (100) | 17 (65.4) | 0 (0) | 9 (34.6) | 26 (100) |
*
: Naturally resistant