Aortic valve-sparing operations for aortic root and ascending aortic aneurysms
Bibliographic record
Abstract
PURPOSE OF REVIEW: Techniques of aortic root replacement have been developed that preserve the native aortic valve. These techniques avoid anticoagulation in patients who would otherwise receive a composite valve graft with a mechanical valve. RECENT FINDINGS: Longer-term data on the longevity of the main two techniques of aortic valve-sparing operations, the root remodeling and the valve reimplantation technique, are now becoming available. Root remodeling appears to have acceptable outcomes in patients without annuloaortic ectasia or Marfan syndrome. In such patients, the aortic valve reimplantation technique provides superior longevity because it provides external support for the aortic annulus and prevents ongoing dilatation. SUMMARY: Although aortic valve-sparing operations are being performed more frequently, particularly in younger patient populations, these procedures have not been adopted in the current guidelines. The excellent long-term outcomes of such procedures should facilitate their widespread adoption.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.003 |
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".