Late resolution of pacemaker lead–related severe tricuspid regurgitation and right ventricular dysfunction after percutaneous lead extraction: A case report and review of the literature
Bibliographic record
Abstract
Endocardial lead–related tricuspid regurgitation (ELTR) is an increasingly recognized complication of cardiac device implantation that can result in right ventricular (RV) dysfunction and right heart failure.1 Several mechanisms of ELTR have been proposed, including lead impingement on tricuspid valve (TV) leaflets; leaflet perforation; entanglement within the valve apparatus; adherence to TV leaflets, chordae, or papillary muscles; and altered RV activation or geometry owing to RV pacing.1,2 Irrespective of the mechanism(s) involved, it has been postulated that the mechanical and hemodynamic consequences of ELTR on the TV and RV should manifest by 6 months post–device implantation, delineating the time period during which compatible signs and symptoms should most raise suspicion for this condition and suggesting that early intervention may be important.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.004 | 0.003 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.004 | 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".