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In vitro combinatory anti-H. pylori effect of DHT with each antibiotic
| FIC index (interpretation) | No. of isolates (%)a |
||||
|---|---|---|---|---|---|
| DHT+AMX | DHT+CLR | DHT+MTZ | DHT+LVX | DHT+TET | |
| ≤0.5 (synergistic) | 0 | 0 | 1 (10) | 0 | 0 |
| 0.5 to ≤1 (additive) | 7 (10) | 9 (10) | 8 (10) | 6 (10) | 8 (10) |
| 1 to ≤4 (indifferent) | 3 (10) | 1 (10) | 1 (10) | 4 (10) | 2 (10) |
| >4 (antagonistic) | 0 | 0 | 0 | 0 | 0 |
AMX, amoxicillin; CLR, clarithromycin; MTZ, metronidazole; LVX, levofloxacin; TET, tetracycline.
