TABLE 5.
Numbers and proportions of discordant MIC results among paired isolates obtained from patients with concurrent rectal and urethral infections (n = 45)
| Discordant resultsa | No. (%) |
|---|---|
| Discordant azithromycin MIC results | 2 (4.4) |
| Urethral MIC higher than rectal MIC | 0 |
| Rectal MIC higher than urethral MIC | 2 (4.4) |
| Discordant cefixime MIC results | 3 (6.7) |
| Urethral MIC higher than rectal MIC | 2 (4.4) |
| Rectal MIC higher than urethral MIC | 1 (2.2) |
| Discordant ceftriaxone MIC results | 2 (4.4) |
| Urethral MIC higher than rectal MIC | 2 (4.4) |
| Rectal MIC higher than urethral MIC | 0 |
| Discordant ciprofloxacin MIC results | 5 (11.1) |
| Urethral MIC higher than rectal MIC | 4 (8.9) |
| Rectal MIC higher than urethral MIC | 1 (2.2) |
| Discordant penicillin MIC results | 5 (11.1) |
| Urethral MIC higher than rectal MIC | 3 (6.7) |
| Rectal MIC higher than urethral MIC | 2 (4.4) |
| Discordant tetracycline MIC results | 3 (6.7) |
| Urethral MIC higher than rectal MIC | 3 (6.7) |
| Rectal MIC higher than urethral MIC | 0 |
a
Discordant indicates that the difference between the rectal MIC and the urethral MIC was ≥2 doubling dilutions.