Table 3. Antibiotic susceptibilities of isolated organisms that caused perforated appendicitis.
| E. coli (total) | E. coli (non-ESBL) | E. coli (ESBL) | Streptococcusspecies | Enterococcus species | P. aeruginosa | |
| Antibiotic | (n = 277) | (n = 266) | (n = 11) | (n = 61) | (n = 32) | (n = 24) |
| Penicillin | 42/61(68.9) | 23/32(71.9) | ||||
| Ampicillin | 97/276 (35.1) | 97/265 (36.6) | 0/11(0) | 24/27(88.8) | ||
| Aztreonam | 220/231 (95.2) | 217/220 (98.6) | 3/11(27.2) | |||
| Ampicillin/sulbactam | 84/203 (41.4) | 84/200 (42.0) | 0/3 (0) | |||
| Amoxicillin/clavulanic acid | 61/73 (83.5) | 55/65 (84.6) | 6/8(75.0) | |||
| Piperacillin/tazobactam | 240/247 (97.1) | 229/236 (97.0) | 11/11 (100) | 20/21 (95.2) | ||
| Cefazolin | 248/276 (89.8) | 248/265 (93.5) | 0/11(0) | |||
| Cefoxitin | 264/270 (97.7) | 254/259 (98.0) | 10/11 (90.9) | |||
| Ceftriaxone | 267/275 (97.0) | 262/264 (99.2) | 5/11(45.4) | 39/39(100) | 2/24 (8.3) | |
| Cefepime | 227/231 (98.2) | 220/220 (100) | 7/11(63.6) | 22/22 (100) | ||
| Quinolone | 218/277 (78.7) | 215/266 (80.8) | 3/11(27.2) | 25/28(89.2) | 21/24 (87.5) | |
| Trimethoprim/sulfamethoxazole | 181/276 (65.6) | 177/265 (66.7) | 4/11(36.3) | 34/47(72.3) | 11/17(64.7) | 1/24 (4.1) |
| Amikacin | 274/277 (98.9) | 264/266 (99.2) | 10/11 (90.9) | 24/24 (100) | ||
| Gentamicin | 226/276 (81.8) | 221/265 (83.4) | 5/11(45.4) | 24/24 (100) | ||
| Tobramycin | 231/277 (83.4) | 227/266 (85.3) | 4/11(36.3) | 24/24 (100) | ||
| Vancomycin | 60/61(98.3) | 30/32(93.7) | ||||
| Imipenem | 276/276 (100) | 265/265 (100) | 11/11 (100) | 11/11(100) | 23/26(88.5) | 23/24 (95.8) |