P1121 Longterm Outcomes of Balloon Assisted Endoscopic Stricture Dilation in Patients with Small Bowel Crohn’s Disease: A Tertiary Referral Center’s Retrospective Experience
Bibliographic record
Abstract
Abstract Background The natural history Crohn’s disease (CD) can be complicated by strictures. Balloon-assisted endoscopy (BAE) has significantly improved the ability to assess and treat small bowel CD, allowing for stricture dilation to improve patient symptoms and potentially delay or avoid surgery. We present a single-centre CD cohort of patients that have undergone BAE for stricture dilation. We assess procedural success, outcomes and safety, evaluate factors associated with a risk of requiring surgical management. Methods All patient who underwent BAE for CD from the period oof April 2012 to January 2024 were assessed and recorded. Within this group, we identified patients who had undergone assessment and/or dilation of structuring CD. Patient demographic and procedural details were extracted. Long-term outcomes, including requirement for repeat dilation and requirement for surgery were recorded from time initial of initial BAE as surrogates for the durability of dilation in these patients. Patients required surgery post initial BAE were compared to the non-surgical group. Results At the University of Alberta Hospital, out of 532 BAE procedures in 231 patients, 157 pt underwent 282 BAE procedures with 629 strictures dilated. In our cohort, 16 strictures were non-traversable and 3 were failed dilations. We had a > 95% successful dilation rate. One perforation occurred requiring emergent surgery (n=1). 65 pts required surgery and 92 pts were managed with dilation. and pharmacotherapy. Overall, 28/65 patients were active smokers (43.08%) in the surgical group vs. 24/92 (26.09%). Biologic use was comparable (76.9% vs 73.9%). The average minimum diameter dilated was lower 15.2 mm (+/- 0.25) vs 16.2 mm(+/- 0.16) in the surgical group. Non-traversable strictures post-dilation was higher in the surgical group (14.72% vs 9.20%). A total 65 patients undersent surgery with an average time of 32.22 months (excluding emergent/urgent surgeries) from index BAE and avg 8.79 months from most recent BAE. There was a total of 3 emergent surgeries (<24 hours from BAE to surgery, including one perforation from intraprocedural complication), 7 urgent surgeries (<30 days from BAE to surgery). Conclusion Based on this cohort, the majority of patients with CD strictures CD can be successfully managed with BAE stricture dilation, and in those requiring surgery the average time from initial BAE to surgery was 32 months. BAE stricture dilation may play an important role in preventing emergent/unplanned surgical interventions and preventing surgeries in select patients. Although this study is currently descriptive, further data analysis of this group is ongoing currently.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".