Documented reasons for conversion of 71 cases requested as colonoscopy to flexible sigmoidoscopy, in order of frequency
| Reason for conversion | n |
|---|---|
| Patient not taken full bowel preparation | 6 |
| Colonoscopy not clinically indicated | 5 |
| Patient discomfort | 4 |
| Impassable stricture | 4 |
| Poor bowel preparation encountered | 2 |
| Patient choice | 2 |
| Looping | 1 |
| Unable to cannulate and therefore sedate patient | 1 |
| Anal pain | 1 |
| No reason given | 45 |