A simple technique to maintain intraoperative head and neck neutrality
Bibliographic record
Abstract
During laparoscopic cholecystectomy, the left-tilt plus reverse Trendelenburg positioning required can result in the head and neck being turned to an extreme left and/or flexed position (Fig. 1A).In certain upper extremity surgeries, the patient is positioned at the edge of the table and the patient's head is at risk of drifting unnoticed off the edge (Fig. 1B).Excessive head rotation is potentially harmful.Weintraub and Khoury have shown that major occlusion of the vertebral artery occurs in 56.4% and 13.3% of patients with (mean age 71 years) and without (mean age 66 years) vascular risk factors, respectively, upon maximum head rotation.1 In adults, Burbridge et al have found that 80% of the internal jugular vein is occluded during head turn of »55°, poten-
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.003 |
| Insufficient payload (model declined to judge) | 0.007 | 0.002 |
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".