Acute Mitral Regurgitation Due to a Torn Porcine Bioprosthetic Cusp
Bibliographic record
Abstract
A46-year-old man presented with a 48-hour history offevers, sweats, and dyspnea. He had bacterial endocar-ditis of the native mitral valve 12 years earlier with subse-quent mitral valve replacement (MVR) with a Hancock II porcine valve (Medtronic Inc). Examination revealed a Grade 3/6 holosystolic murmur at the apex radiating into the axilla with crackles heard halfway up both lung fields. A diagnosis of infective endocarditis with acute mitral regurgitation (MR) was made and serial blood cultures drawn. Transesophageal echocardiogram (TEE) revealed severe MR (Figure 1). The MR was transvalvular with no perivalvular leak.1–3 A large mobile linear echodense mass (length2.0 cm) was seen in the left ventricle and this prolapsed across the valve into the left atrium (LA, Figure 2 through 4) along with partial prolapse of one of the leaflets of the valve (Figure 3 and 4). The patient underwent urgent mitral valve replacement where
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| 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 | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".