THE EFFECTS OF AIRWAY CLOSURE AND OBSTRUCTED RESPIRATORY EFFORTS IN CENTRAL AND MIXED APNOEAS IN PRETERM INFANTS
Bibliographic record
Abstract
Background Airway closure during central apnoea is frequently observed in neonates and may play an important role in preserving oxygenation by maintaining lung volume. However, respiratory efforts against a closed airway have the potential to worsen oxygen (O2) desaturation and prolong the apnoea. Objective To investigate the effect of patency of the airway on the length of central apnoeas and the degree of O2 desaturation. Methods We studied 15 preterm infants with significant mixed apnoeas (birth weight 1.6 ± 0.1 kg; gestational age 30 ± 1 weeks; postnatal age 36 ± 1 days). For each infant, all mixed apnoeas observed during the study period (n = 68) were matched 1 : 2 with the longest central apnoeas. Results Although mixed apnoeas were significantly longer than central apnoeas (11.7 ± 0.6 vs 8.9 ± 0.2 s; p Conclusions These findings suggest that the length of central apnoea is not affected by active closure of the airway, respiratory efforts against a closed airway prolong apnoea and worsen the degree and slope of desaturation.
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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 | 0.004 |
| 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".