Mask ventilation of preterm infants in the delivery room
Bibliographic record
Abstract
OBJECTIVE: To measure tidal volumes (VT) and describe the interactions between spontaneous breaths and positive pressure ventilation (PPV) inflations during stabilisation of preterm infants in the delivery room (DR). We used a respiratory function monitor (RFM) to evaluate the first 5 min of mask respiratory support provided to preterm infants. STUDY DESIGN: An observational study of infants <32 weeks gestation, born in a single tertiary perinatal centre receiving mask PPV in the DR. PPV was delivered with a round silicone facemask connected to a T-piece device and RFM. The RFM display was not visible to the resuscitator. Respiratory function parameters in the first 5 min after birth were analysed by breath-type (inflations, assisted inflations, spontaneous breaths between PPV, and breaths during continuous positive airway pressure (CPAP)). Parameters measured included VT, peak inspiratory pressure, peak end expiratory pressure and mask leak. RESULTS: A total of 2605 inflations and breaths from 29 subjects were analysed. Substantial leak was observed during all four breath types with median leaks ranging from 24% to 59%. Median tidal volumes were greater during inflations (8.3 ml/kg) and assisted inflations (9.3 ml/kg) than spontaneous breaths between PPV (3.2 ml/kg) and breaths during CPAP (3.3 ml/kg). CONCLUSIONS: Facemask leak is large during resuscitation of preterm infants using round silicone masks. Tidal volumes delivered during PPV inflations are much higher than those generated during spontaneous breathing by an infant on CPAP.
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How this classification was reachedexpand
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 | 0.000 |
| 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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".