Abstract 18799: Correlation of 2D Strain for Intraoperative Assessment of Right Ventricular Mechanics with Admittance Catheters in Juvenile Pigs
Bibliographic record
Abstract
Background: Surgical manipulations such as opening the chest and volume loading have the potential to alter ventricular function. There is paucity of data on the effects of such manipulations on right ventricular (RV) function. We measured tricuspid annular plane excursion (TAPSE) and RV strain by two-dimensional echo (2DE) speckle tracking to assess systolic and diastolic RV function in juvenile pigs under conditions that simulate the intraoperative environment. These were compared to simultaneously obtained parameters of RV function using admittance catheters. Methods: Epicardial 2DE was performed (Philips iE33) in 6 juvenile pigs (19-23kg). TAPSE and systolic and diastolic 2D RV longitudinal strain (LS) and strain rate (LSR) (TomTec Image Arena, TomTec, Germany) were measured offline. RV systolic and diastolic pressure/volume data was acquired simultaneously using admittance catheters (Scisense Inc, Canada) under conditions including closed chest, open chest and volume loading. Comparisons were made us...
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".