Association of Preoperative Echocardiographic Right Ventricular Function with Outcomes after Cardiac Surgery: A Retrospective Cohort Study
Bibliographic record
Abstract
Quantitative measures of right ventricular (RV) function, such as RV fractional area change (RVFAC) and tricuspid annular plane systolic excursion (TAPSE), are recommended in preoperative echocardiography for cardiac surgery. This thesis investigated the association of quantitative RV function and outcomes in cardiac surgical patients. Preoperative TAPSE and RVFAC were reported in 2,275 and 1,379 patients, respectively. Adjusting for confounders, lower TAPSE was significantly associated with mortality (OR per 1 mm increase: 0.92, 95% CI: 0.87-0.97) and hospital length of stay (HLOS) (OR per 1 mm: 0.99, 95% CI: 0.99-0.99), but not acute kidney injury (AKI). Lower RVFAC was also significantly associated with mortality (OR per 1% decrease: 0.95, 95% CI: 0.92-0.98) and HLOS (OR per 1%: 0.99, 95% CI: 0.99-0.99), but not AKI. Discharges home with support or transferred to other facilities was not significantly associated with RV function. TAPSE<17mm and RVFAC<35% were also significantly associated with mortality and HLOS.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
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".