Quadricuspid Aortic Valve May Be Misdiagnosed as Bicuspid Aortic Valve
Bibliographic record
Abstract
Quadricuspid aortic valve (QAV) is a rare congenital cardiac anomaly with incidence of 0.008-0.033%. The most common complication of QAV is aortic regurgitation (75%). Other complications include aortic stenosis, left ventricular hypertrophy, bundle branch blocks, and abnormal displacement of the ostium in the right coronary artery. It is vital that patients with QAV who present with progressive aortic regurgitation undergo valve replacement or repair within an appropriate amount of time. This case report focuses on the presentation of a 20-year-old man who was easily overlooked with transthoracic echocardiography (TTE) during childhood when he was diagnosed with aortic stenosis secondary to bicuspid aortic valve. The patient presented to our cardiology clinic for evaluation of a new diastolic murmur. TTE revealed QAV, moderate aorticinsufficiency, and mild aortic stenosis. J Med Cases. 2015;6(4):170-172 doi: http://dx.doi.org/10.14740/jmc2090w
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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 | 0.001 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 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".