Postlaryngectomy pharyngocutaneous fistula: determining the risk of preoperative tracheostomy and primary tracheoesophageal puncture.
Bibliographic record
Abstract
BACKGROUND: This article considers whether preoperative tracheostomy and primary tracheoesophageal puncture (TEP) contribute as independent risk factors to the development of pharyngocutaneous fistula (PCF), as well as discusses the significant factors related to the perioperative management of these patients. METHODS: Retrospective data were collected on 145 patients treated with total laryngectomy/pharyngolaryngectomy between January 2003 and July 2010 at the Victoria Hospital in London, Ontario, including whether preoperative tracheostomy or primary TEP was performed. RESULTS: One in four (25%) patients developed a postoperative PCF. No increase in PCF rates was observed with either preoperative tracheostomy or primary TEP. Salvage surgery PCFs achieved lower rates of spontaneous closure compared to those undergoing primary surgery (p = .002). CONCLUSIONS: Neither preoperative tracheostomy nor primary TEP was associated with the development of PCF. Surgical closure of PCF is more likely to be required in the setting of salvage surgery.
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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 | 0.000 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".