TABLE 2.
Median ertapenem and meropenem zone diameter by carbapenem-resistant organism and carbapenemase-producing organism status
| Organism status | Ertapenem (ZD = 6–27 mm, n = 2,099) |
Meropenem (ZD = 6–32 mm, n = 1,943) |
||||
|---|---|---|---|---|---|---|
| No. positive (%) | Median (IQR) diams (mm) |
No. positive (%) | Median (IQR) diams (mm) |
|||
| Positive | Negative | Positive | Negative | |||
| CRO | 777 (37) | 16 (6–23) | 25 (21–26) | 636 (32.7) | 26 (20–30) | 30 (28–32) |
| Organisms | ||||||
| CRE | 454 (21.6) | 20 (11–24) | 24 (18–26) | 385 (19.8) | 28 (22–30) | 30 (27–32) |
| CR-NF | 363 (17.3) | 10 (6–20) | 24 (20–26) | 289 (14.9) | 24 (17–30) | 30 (28–32) |
| Mechanisms | ||||||
| CPO | 202 (9.6) | 11 (6–20) | 24 (18–25) | 174 (9) | 20 (6–28) | 30 (27–31) |
| CPE | 105 (5) | 12 (6–20) | 23 (17–25) | 94 (4.8) | 20 (6–28) | 30 (26–31) |
| CP-NF | 103 (4.9) | 10 (6–20) | 23 (17–25) | 86 (4.4) | 19 (6–28) | 30 (26–31) |
| KPC CP-CRE | 51 (2.4) | 6 (6–17) | 23 (16–25) | 46 (2.4) | 16 (6–25) | 30 (26–31) |
| NDM CP-CRE | 21 (1) | 6 (6–12) | 23 (16–25) | 19 (1) | 6 (6–18) | 30 (26–31) |
| OXA-48-like CP-CRE | 13 (0.6) | 6 (6–6) | 23 (16–25) | 12 (0.6) | 6 (6–12) | 30 (26–31) |