Table 2.
Antimicrobial therapy characteristics according to the timing and level of microbiologic results
| AT course | |||||
|---|---|---|---|---|---|
| No AT | AT started | Ongoing AT | AT modified | AT stopped | |
| Clinical, radiologic or surgical suspicion of infection, N = 509 | 146 (29%) | 363 (71%) | - | - | - |
| Gram-stained direct examination, N = 509 | 41 (8%) | 105 (21%) | 345 (68%) | 15 (3%) | 3 (1%) |
| Available, N = 204 (40%) | 8 | 105 | 73 | 15 | 3 |
| Not available, N = 305 (60%) | 33 | - | 272 | - | 0 |
| Microbiologic identification (24 to 48 hours), N = 509 | 23 (4%) | 25 (5%) | 403 (77%) | 55 (11%) | 3 (1%) |
| Available, N = 251 (49%) | 6 | 25 | 162 | 55 | 3 |
| Not available, N = 258 (51%) | 17 | - | 241 | - | 0 |
| Susceptibility testing, N = 509 | - | 16 (3%) | 392 (77%) | 93 (18%) | 8 (1.8%) |
| Available, N = 261 (51%) | - | 14 | 151 | 93 | 3 |
| Not available, N = 248 (49%) | - | 2 | 241 | - | 5 |
Data are presented in the patients receiving new AT (n = 509) and expressed as number (proportion). AT, antibiotic therapy.