Percutaneous closure of a complex fistula that originates from all coronary arteries and drains to the pulmonary artery
Bibliographic record
Abstract
A coronary-to-pulmonary-artery fistula (CPAF) is defined as a connection between the coronary arteries and the pulmonary arteries (PAs). Invasive treatment options for CPAFs include surgical ligation and transcatheter coil or plug embolization. A 60-year-old female patient was referred to our hospital with symptoms of exercise-induced angina (Canadian Cardiovascular Society Class III [CCS-3]). Her relevant history included elective stenting of the left anterior descending (LAD) artery in 2013 and surgery for an LAD to PA fistula in 2015. Upon recurrence of the same fistula in 2017, she underwent a failed antegrade (from LAD to PA) attempt for percutaneous closure of the fistula. A retrograde approach was decided because of the extensive tortuosity of the fistula's proximal part that led to the previous failed attempt and the likelihood of ceasing whole blood flow at the fistula's distal neck. Through right femoral venous access, we advanced a 5 Fr. 45 cm TorqVue low-profile delivery system (St. Jude Medical, Little Canada, MN, USA) over a J-tip 0.035-inch guidewire to the PA. The antegrade imaging guidance enabled us to advance the guidewire to the distal neck of the fistula retrogradely. As the distal part of the fistula was similar to a tunnel-shaped patent ductus arteriosus (PDA) and was measured 4 mm at the narrowest diameter, we opted for an Amplatzer duct occluder II 6 × 6 (Abbott Vascular, Chicago, IL, USA) to close it.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".