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Summary of studies on abnormal visual inspection findings in clinically used endoscopes
| Study | Endoscopes (duodenoscopes), n (n) | Scratches (%) | Buckling (%) | Stains (%) | Debris (%) | Fluids (%) |
| Thaker et al[11], 2018 | 59 (14) | 86 | NR | 59 | 22 | 8 |
| Ofstead et al[19], 201819 | 45 (5) | NR | NR | NR | NR | 47 |
| Barakat et al[20], 2018 | 68 (7) | 99 | 3 | NR | 96 | 43 |
| This study | 19 (19) | 52.6 | 78.9 | 73.7 | 73.7 | 31.6 |
NR: Not reported.
