Background
Methods
Ethics approval
General information
Study tools
Statistical methods
Results
Description of failure | Solution | Classification of repair | Repair cost (USD) |
---|---|---|---|
Water leaks at the bending rubber, many black dots in the video image, and pressure marks or peeling in the insertion tube | Replaced the components of the insertion section | Level A | 8142 |
No upper deflection capability, many black dots in the video image, and connector was oxidized | Replaced the components of the insertion section, and cleaned the connector | Level A | 8142 |
Angle wire was broken, and pressure marks in the insertion tube | Replaced the components of the insertion section | Level A | 8142 |
Water leaks in light guide tube, pressure marks in the insertion tube, no upper deflection capability, and worn-out button | Replaced the components of the insertion section, light guide tube, and button | Level A | 8142 |
The upper deflection control wire was broken, and black dots in the video image | Replaced the components of the insertion section | Level A | 8142 |
No deflection capability, pressure marks in the insertion tube, 6 black dots in the video image, and cracked image | Replaced the components of the insertion section | Level A | 8142 |
No upper deflection capability, and pressure marks in the insertion tube | Replaced the components of the insertion section | Level A | 8142 |
The bending tube did not have a high bending strength, pressure marks in the insertion tube, and around 20 black dots in the video image | Replaced the components of the insertion section | Level A | 8142 |
Dim video image, and pressure marks in the insertion tube | Replaced the components of the insertion section | Level A | 8142 |
Video image displayed improperly, but occasionally it displayed properly after shaking the light guide tube | Replaced the components of the insertion section | Level A | 12,443 |
Abnormal internal arrangement due to the pressure marks in the insertion tube, and no video image displayed during angulation adjustment because the charged-coupled device wire was squeezed | Replaced the components of the insertion section | Level A | 12,443 |
Video image displayed improperly during angulation adjustment | Replaced the components of the insertion section | Level A | 12,443 |
Video image displayed improperly during angulation adjustment, pressure marks in the insertion tube, and water leaks in the forceps channel | Replaced the components of the insertion section | Level A | 12,443 |
No video image during angulation, deformation and pressure marks in insertion tube, and water leaks in the forceps channel | Replaced the components of the insertion section | Level A | 12,443 |
No video image during angulation adjustment | Replaced the components of the insertion section | Level A | 12,443 |
Error code “E216” appeared after the flexible bronchoscope was connected to the host | Replaced the components of the insertion section | Level A | 12,443 |
Dim video image, and pressure marks in the insertion tube | Replaced the components of the insertion section | Level A | 12,443 |
Error code “B30” appeared, and black screen | Replaced the components of the insertion section | Level A | 12,443 |
Black screen during angulation in down direction, water leaks in the forceps channel | Replaced the components of the insertion section | Level A | 12,443 |
Pressure marks in the front end of the bronchoscope | Replaced the front-end rubber | Level D3 | 0 |
Water leaks at the bending rubber | Replaced the rubber | Level D3 | 0 |
Air leak | Replaced the rubber on the insertion section | Level D3 | 0 |
Front end bending | Replaced the bending rubber | Level D3 | 0 |
Visible pressure marks in the insertion section | Replaced the rubber on the insertion section | Level D3 | 0 |
Variable | Description | Case group | Control group | Chi-square value/t value | P |
---|---|---|---|---|---|
Type of flexible bronchoscope | Fiber bronchoscope | 10 (34.5) | 73 (62.9) | 7.671 | 0.006 |
Electronic bronchoscope | 19 (65.5) | 43 (37.1) | |||
Size of flexible bronchoscope | Small-diameter bronchoscope | 27 (93.1) | 81 (69.8) | 6.613 | 0.01 |
Large-diameter bronchoscope | 2 (6.9) | 35 (30.2) | |||
Work experience of the person responsible for flexible bronchoscope reprocessing | Less | 22 (75.9) | 53 (45.7) | 8.458 | 0.004 |
Rich | 7 (24.1) | 63 (54.3) | |||
Time when failure occurred | The 1st quarter | 11 (37.9) | 25 (21.6) | 8.496 | 0.037 |
The 2nd quarter | 4 (13.8) | 36 (31.0) | |||
The 3rd quarter | 10 (34.5) | 24 (20.7) | |||
The 4th quarter | 4 (13.8) | 31 (26.7) | |||
Work experience of the surgeon | Less | 18 (62.1) | 67 (57.8) | 0.178 | 0.673 |
Rich | 11 (37.9) | 49 (42.2) | |||
Type of surgery | Foreign body removal | 10 (43.5) | 37 (31.9) | 0.792 | 0.715 |
Bronohoalveolarlavage | 17 (58.6) | 74 (63.8) | |||
Other | 2 (6.9) | 5 (4.3) |
Variable | Description | B | B and standard deviation | Wald chi-square value | P | Odds ratio | 95% confidence interval for odds ratio |
---|---|---|---|---|---|---|---|
Type of flexible bronchoscope | Fiber bronchoscopes | 0.880 | 0.462 | 3.629 | 0.057 | 0.415 | 0.168–1.026 |
Electronic bronchoscopes* | |||||||
Size of bronchoscope | Small-diameter bronchoscopes | -1.741 | 0.784 | 4.928 | 0.026 | 5.706 | 1.226–26.548 |
Large-diameter bronchoscopes* | |||||||
Work experience of the person responsible for flexible bronchoscope reprocessing | Less | -1.134 | 0.494 | 5.259 | 0.022 | 3.107 | 1.179–8.187 |
Rich* | |||||||
Time when failure occurred | -0.254 | 0.213 | 1.422 | 0.233 | 0.776 | 0.511–1.178 |