Bilateral coronary ostial stenosis after a Bentall procedure
Bibliographic record
Abstract
A 44-year-old woman was admitted to our hospital for exertional angina with a strikingly positive stress electrocardiogram (see Supplementary data online, Figure S1). Symptoms began about 8 months after Bentall procedure with a valve conduit (St Jude 23 mm) for a degenerated bicuspid aortic valve, associated with aortic root dilation, without coronary artery disease. A 64-slice cardiac computed tomography (CT) showed bilateral severe coronary ostial stenosis, clearly depicted by multiplanar reconstructed images [A and B (arrowhead) right coronary artery (RCA); (arrow) left main artery (LMA); E: RCA; F: left anterior descending coronary artery (LAD); G and H: left circumflex artery (LCX)] and three-dimensional rendering images (C: RCA, D: LMA; see Supplementary data online, MovieS1). There were no signs of coronary atherosclerosis or aortic complications. Preoperative invasive coronary angiography confirmed CT findings (I and J). Surgical revascularization was performed with a left internal mammary graft on the left anterior descending coronary artery and a saphenous vein graft on the left circumflex artery, while the RCA aortic button was excised, reconstructed with a saphenous vein graft, and reimplanted on the aortic conduit. The clinical course was then uneventful and she remains asymptomatic at more than 3-year follow-up. Coronary ostial stenosis is a rare but severe complication of Bentall procedure with an incompletely understood pathogenesis, cardiac CT represents an excellent tool for the non-invasive diagnosis of this condition, with the capability of showing both aortic and coronary complications. Supplementary data are available at European Heart Journal - Cardiovascular Imaging online.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.004 | 0.005 |
| Insufficient payload (model declined to judge) | 0.006 | 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".