Transcatheter aortic-valve replacement: a cardiac surgeon and cardiologist team perspective
Bibliographic record
Abstract
PURPOSE OF REVIEW: Transcatheter aortic-valve implantation is a promising new treatment modality for patients with aortic-valve disease, where it may revolutionize the treatment of elderly and high-risk patients. RECENT FINDINGS: The two devices currently available, the Edwards Sapien valve and the Medtronic CoreValve system, are presented. With a focus on the CoreValve, we describe the indications, contraindications, procedural technique, cardiologist and heart surgeon team dynamics, and special considerations in patients with concomitant cardiopulmonary disease, peripheral arterial disease, low gradient aortic stenosis, and previous bioprosthetic aortic-valve replacement. CONCLUSION: We make a case for judicious team-based adoption of these new technologies and emphasize the need for evidence-based and health economics data. We believe that the above will enable determining the therapeutic niche of these modalities amongst the excellent results of conventional aortic-valve replacement surgery.
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How this classification was reachedexpand
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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.005 | 0.010 |
| 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 | 0.001 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".