Hand position during chest compression in infantile piglets – Do you need to encircle the chest with the 2-thumb-technique?
Why this work is in the frame
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Bibliographic record
Abstract
The Pediatric Life Support Consensus on Science With Treatment Recommendations states that chest compressions (CC) be performed with the 2-thumb-encircling and if the chest can not be encircled the 2-finger-technique. To compare the hemodynamic effects of four different compression methods during CC in a piglet model of infant asphyxia. Nine asphyxiated infant piglets were randomized to CC with 2-thumb-encircling, 2-thumb-, 2-finger-, and one-hand-techniques for one minute at each technique. CC were performed manually while hemodynamic parameters were continuously measured. Nine infantile piglets (age 5–10 days, weight 2.1–3.0 kg) were included in the study. The 2-thumb-technique and 2-thumb-encircling technique both had a significantly higher mean (SD) ejection fraction of 52.6 (31.2)% and 64.4 (30.6)% compared to the one-hand-technique with 26.6 (15.1)% (p = 0.005). The 2-thumb-encircling technique also had a significantly higher ejection fraction compared to the 2-finger-technique with values of 64.4 (30.6)% and 30.4 (12.1)%, respectively (p = 0.005). Furthermore, 2-thumb-technique and 2-thumb-encircling technique produced significantly higher carotid blood flow and dp/dt max , and significantly lower dp/dt min compared to the one-hand- and 2-finger-techniques. The 2-thumb- and 2-thumb-encircling-techniques produced significantly higher ejection fraction, carotid blood flow, and dp/dt max , and lower dp/dt min compared to the 2-finger- and one-hand-techniques. Encircling the chest during the 2-thumb-technique produces similar hemodynamic effects compared to the 2-thumb-technique without encircling.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.000 | 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 it