- Design
- Systematic review and meta-analysis of observational studies
- Population
- 60,044 children having tonsillectomy, 18 studies
- Primary outcome
- Postoperative respiratory complications
- Effect
- 12.2% vs 7.6%; OR 1.86 (1.38-2.49); no excess in ward-only studies
This systematic review and meta-analysis included 18 studies with 60,044 children having tonsillectomy, with or without adenoidectomy; 7.8% were obese.
Respiratory complications occurred in 12.2% of children with obesity and 7.6% of those without (OR 1.86, 95% CI 1.38 to 2.49), with substantial heterogeneity (I² 78%). The key finding came from the subgroups: obesity raised the odds only in studies that counted complications in the post-anaesthesia care unit. In studies limited to events on the ward, obesity did not increase the odds.
This suggests that problems in obese children declare themselves early, in recovery. Children with obesity who pass through recovery without complications may not need routine overnight admission on weight alone. Severity of sleep apnoea, age and other comorbidities still matter, and local admission criteria remain the rule until they are revised.
- Observe obese children closely in recovery after tonsillectomy, when the extra risk appeared.
- Consider same-day discharge for obese children who had no respiratory events in recovery and meet other criteria.
- Keep overnight admission for severe sleep apnoea, young age or significant comorbidity.
- Record recovery-room events in your audit so admission decisions rest on local data.
Why it matters
Routine admission for obesity takes beds from children who need them more.
Don't overread it
The ward-only finding comes from a subgroup of studies, which is weaker evidence than the main result.
The statistics, in plain English
An odds ratio of 1.86 means nearly double the odds overall. The subgroup split by phase of care is the useful finding, but subgroup comparisons across studies can be confounded by differences in how those studies were run.
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