Short‐term external ureter stenting shows significant benefit in comparison to routine double‐J stent placement after ureterorenoscopic stone extraction: A prospective randomized trial – the Fast track stent study (Fa<scp>ST</scp>)
Bibliographic record
Abstract
OBJECTIVES: To determine whether short-term stenting using an external ureter catheter following ureterorenoscopic stone extraction provides a better outcome in comparison to double-J stent ureteral stenting. METHODS: Between August 2014 and August 2015, 141 patients initially managed with a double-J stent insertion were prospectively randomized to ureter catheter for 6 h vs double-J stent insertion for 5 days after stone extraction via ureteroscopy retrograde surgery (including flexible ureteroscopy retrograde surgery) in a single academic center. Endoscopic procedures were performed by nine surgeons. Exclusion criteria were acute urinary tract infection, a solitary kidney, or a stone mass more than 25 mm. Study endpoints were ureter-stent related symptoms and pain assessed by a validated questionnaire (ureteral stent symptom questionnaire) and visual analogue scale before and 4 weeks after surgery. RESULTS: Overall stone-free rate was more than 90%. Mean operative time was 24 min (range 5-63). Groups did not differ in terms of age, body mass index, and stone size. Patients who received short-term ureter catheter showed a significantly higher quality of life. In the ureter catheter group, the urinary index score (16.8 vs 27.8; P < 0.0001), the pain score (9.7 ± 1.3 vs 20.2 ± 1.5; P < 0.0001), and general health index (15.3 ± 0.7 vs 8.5 ± 0.6; P < 0.0001) were significantly lower. Consultation of a physician and antibiotic treatment were rarely needed (1.3 ± 0.1 vs 1.6 ± 0.1; P = 0.017). CONCLUSION: A short-term ureter catheter insertion for 6 h following ureteroscopy retrograde surgery stone removal is a safe procedure and superior to double-J stent insertion with regard to urinary symptoms, pain, quality of life, and stent related symptoms. Patients treated with a short-term ureter catheter recover more quickly, return to work earlier, and need less doctor visits. Most patients would recommend a ureter catheter, and would prefer this strategy in case of future stone treatments.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.003 | 0.003 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.004 | 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".