Risk Factors for Postoperative Respiratory Events After Pediatric Microlaryngoscopy and Bronchoscopy
Bibliographic record
Abstract
Importance: Preoperative risk factors can guide appropriate postoperative disposition location to a ward bed, intermediate care, or intensive care unit after pediatric microlaryngoscopy and bronchoscopy (MLB), resulting in optimization of resource use and costs. Objective: Identify risk factors associated with postoperative respiratory events requiring escalation of care after MLB to identify a subpopulation of high-risk patients. Design: Retrospective cohort study. Setting: Tertiary pediatric center. Participants: Patients undergoing MLB alone or with intervention from 2017 to 2023. Intervention: MLB alone or with intervention. Main Outcome Measures: Primary outcome was postoperative respiratory events requiring escalation of nursing care: escalation of oxygen supplementation for >2 hours, laryngospasm, bronchospasm, unplanned escalation of care to ICU, O 2 desaturation <80% and Pediatric Early Warning Score (PEW score) >5. Multivariate logistic regression was performed to identify risk factors for postoperative respiratory events. Results: 420 patients were included. The mean age was 39.4 months and 41% were female. Overall, 229 patients (54.5%) had events that required escalation of care. Five patients (1.2%) had laryngospasm, 5 (1.2%) desaturated below 80%, and 15 (3.6%) required an unplanned escalation of care to the ICU. 157 (37.4%) required escalation of care based on a PEW score >5, and 148 (35.2%) required supplemental O2 for >2 hours. Multivariate analysis identified independent risk factors for postoperative respiratory events including age 1 to 2 years (OR 2.47, P = .037), cardiovascular disease (OR 2.96, P = .0066), GERD (OR 1.89, P = .042), ASA IV (OR 5.76, P = .0032), MLB with supraglottoplasty (OR 4.34, P = .0081), inpatient surgery (OR 4.68, P < .0001), and operative time ≥180 minutes (OR 2.16, P = .05). Conclusion: Risk factors for postoperative respiratory events after MLB include age 1 to 2 years, CVD, GERD, ASA 4, MLB with supraglottoplasty, inpatient emergency, OR time >180 minutes. Tailoring postoperative disposition based on these preoperative risk factors may result in a reduction in ICU utilization while ensuring patients are safely monitored in an appropriate setting. Level of Evidence: Level 3
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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 | 0.000 | 0.002 |
| 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 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".