Table 3 Analysis of the reasons for unqualified water used for the final rinsing of flexible endoscopes and corresponding measures in 290 medical institutions
Content | Total (n=269) | Tertiary hospital (n=125) | Secondary Hospital (n=144) | |||
|---|---|---|---|---|---|---|
Quantity | Percentage (%) | Quantity | Percentage (%) | Quantity | Percentage (%) | |
Reasons for unqualified results of final rinse water for endoscope | ||||||
 Ineffective disinfection of water supply pipeline | 226 | 84.01 | 108 | 86.40 | 118 | 81.94 |
 Terminal filter membrane not installed | 94 | 34.94 | 43 | 34.40 | 51 | 35.42 |
 Terminal filter membrane not replaced | 204 | 75.84 | 90 | 72.00 | 114 | 79.17 |
 Biofilm formed at the faucet end of the water supply pipeline | 200 | 74.35 | 96 | 76.80 | 104 | 72.22 |
 Sampling contamination | 203 | 75.46 | 96 | 76.80 | 107 | 74.31 |
 Inoculation contamination | 129 | 47.96 | 70 | 56.00 | 59 | 40.97 |
Measures to be taken if the water used for final rinsing of endoscope unqualified | ||||||
 Flush the water supply pipeline | 189 | 70.26 | 92 | 73.60 | 97 | 67.36 |
 Disinfect water supply pipeline | 222 | 82.53 | 105 | 84.00 | 117 | 81.25 |
 Replace the terminal filter membrane | 229 | 85.13 | 103 | 82.40 | 126 | 87.50 |
 Other measures a | 13 | 4.83 | 6 | 4.80 | 7 | 4.86 |
 No measures taken if endoscopic test qualified | 47 | 17.47 | 19 | 15.20 | 28 | 19.44 |
 No measures taken (regardless of endoscopic examination results) | 48 | 17.84 | 20 | 16.00 | 28 | 19.44 |