Acute Iatrogenic Aortic Root Dissection With Pseudoaneurysm After Transcatheter Aortic Valve Implantation
Bibliographic record
Abstract
BACKGROUND: Major complications of transcatheter aortic valve implantation (TAVI) remain rare but are associated with significant morbidity and mortality. Aortic dissection typically results from procedural trauma to the aorta. CASE SUMMARY: We describe an iatrogenic aortic root dissection and contained aortic laceration during TAVI procedure with a 29-mm Evolut FX in an 88-year-old man with a history of coronary artery bypasses. Postprocedural computed tomography revealed a dissection in the noncoronary sinus of Valsalva with a mediastinal hematoma, evolving into a well defined pseudoaneurysm (20 mm). The patient received conservative management, resulting in a favorable clinical outcome. DISCUSSION: This case underscores the importance of preprocedural imaging, precise procedural execution, and close postprocedural monitoring. Although surgical repair is the standard for aortic dissection, conservative management may be an effective alternative in selected high risk patients.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 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) | 0.002 | 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".