0756 Use of Split-Night Polysomnography in Children with Sleep Disordered Breathing
Bibliographic record
Abstract
Split Night Polysomnography (snPSG) is used in adults to combine diagnostic and therapeutic assessments into a single night study. There is a paucity of data in the pediatric population, and routine use of snPSG is not well established. Despite a lack of published literature, it is believed that snPSG may be unsuccessful due to intolerance of positive airway pressure (PAP) initiation without acclimatization. We describe a large cohort of children with sleep disordered breathing (SDB) who underwent snPSG. We hypothesize that snPSG will not affect sleep latency or efficiency. Data was obtained from a larger database collecting retrospective data on children 0–17 years of age who received PAP in a home-based setting for at least 3 months in the province of Alberta. Children started on PAP during snPSG between May 2010 and December 2014 were identified. Demographics and snPSG data were analyzed. Data presented as median (first quartile, third quartile). PAP was first started during snPSG in 180 patients. Patient age was 7.2 years (1.6, 13.0), and 70% were male. During the diagnostic portion, sleep latency was 10.5min (3.5, 20.7) with a total sleep time (TST) of 210.0min (151, 280.6). Sleep efficiency was 85.1% (77.1, 91.9). AHI was 16.8 (8.3, 43.9). Mean end-tidal CO2 (ETCO2) was 44.9mmHg (41.9, 47.7) and mean transcutaneous CO2 (TCCO2) was 44.8mmHg (41.7, 47.5). Fourty-nine patients had ETCO2 or TCCO2 above 50mmHg for greater than 25% of TST. After initiating PAP during snPSG, sleep latency was 5.5min (0.9, 17.3) with a TST of 203.0min (128.7, 265.3). Sleep efficiency was 84.7% (74.7%, 92.1%). AHI was 5.5 (2.0, 12.0). Mean TCCO2 was 42.6mmHg (38.9, 46.9). Twenty-one patients had TCCO2 above 50mmHg for greater than 25% of TST. Sleep latency and sleep efficiency were preserved between diagnostic and titration portions of snPSGs. snSPG may be a viable option for pediatric patients, and should be explored further. Given the limited access to PSG in Canada, snPSG may provide a viable route to reduce numbers of PSGs required for diagnosis and treatment. None.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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".