A Novel Valvuloplasty Scoring Balloon Catheter for Aortic Stenosis
Why this work is in the frame
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Bibliographic record
Abstract
BackgroundThere has been a renewed interest in balloon aortic valvuloplasty (BAV) since the inception of transcatheter aortic valve replacement (TAVR) in treating aortic stenosis (AS). This study aimed to demonstrate the safety and feasibility of a novel aortic valvuloplasty balloon catheter for the treatment of symptomatic severe aortic valve stenosis.MethodsData from 25 patients who underwent BAV with the AngioSculpt Valvuloplasty Scoring Balloon Catheter at two Canadian centers with clinical follow-up and echocardiographic assessment at 30 days, 6 months, and 12 months were analyzed.ResultsMean age of the patients was 83.6 ± 5.8 years with 68% females. Mean gradient across the aortic valve was 44.0 ± 15.1 mmHg pre- and 33.6 ± 13.8 mmHg post-valvuloplasty (average reduction of 24% post-BAV, p < 0.05). 38% of patients showed ≥ 30% aortic gradient reduction. There were no major adverse cardiovascular events. Stroke and major vascular complication rates were zero. Two patients had moderate aortic regurgitation post-valvuloplasty.ConclusionPreliminary results with a novel valvuloplasty scoring balloon for aortic stenosis demonstrate no safety concerns with a favorable gradient reduction. Additional studies will be required to demonstrate clinical utility in selected patients.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it