Chest compression during sustained inflation versus 3:1 compression-to-ventilation ratio during neonatal cardiopulmonary resuscitation of asphyxiated piglets
Why this work is in the frame
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Bibliographic record
Abstract
Background Current neonatal resuscitation guidelines recommend using the 3:1 chest compression-to-ventilation (C:V) ratio technique. However, an alternative technique using continuous compressions superimposed with a high distending pressure or sustained inflation (CC+SI) may improve return of spontaneous circulation (ROSC), survival, and post-resuscitation outcomes. Objective In a piglet model of asphyxia-induced cardiac arrest, compare time to ROSC with CC+SI or 3:1 C:V technique for providing neonatal cardiopulmonary resuscitation (CPR). Methods Secondary analysis of 132 term newborn mixed breed piglets (1-3 days of age, weighing 1.7-2.4 kg) from six different studies, which were exposed to 30-50 min of normocapnic hypoxia followed by asphyxia until cardiac arrest. This was followed by CPR with either the CC+SI or 3:1 C:V technique. Results Although the proportion of piglets achieving ROSC was similar between CC+SI and 3:1 C:V [59/83 (71%) vs. 40/49 (82%)], the time to ROSC was significantly shorter with CC+SI [median (IQR), 87.5 (66.8–147.5) vs. 120 (76.5–267) s; p = 0.0097], corresponding to a mean difference of –73.9 s (95% CI –122.5 to –25.3). Survival up to 4 h did not differ between groups (risk ratios 1.04, 95% Confidence intervals 0.82–1.32), with mean (SD) survival time among ROSC survivors of 237 (18) min for CC+SI vs 220 (55) min for 3:1 C:V (p=0.0623). In adjusted analyses, CC+SI yielded faster time to ROSC (Geometric Mean Ratio 0.67, 95% CI 0.50–0.88), with no effect modification by FiO 2 , but a rate-dependent effect on time to ROSC; 4-h survival did not differ between methods. Conclusions Use of the CC+SI technique during neonatal piglet resuscitation leads to a faster ROSC, with no difference in survival.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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