The extra respiratory risk after tonsillectomy in obese children was seen in the recovery room, not on the ward

Design

Systematic review and meta-analysis of observational studies

Population

18 studies, 60,044 children under 18 after tonsillectomy (7.8% with obesity)

Primary outcome

Post-tonsillectomy respiratory complications

Effect

12.2% vs 7.6%; OR 1.86 (95% CI 1.38 to 2.49); no increase in ward-only studies

A systematic review and meta-analysis of 18 studies with 60,044 children under 18 compared respiratory complications after tonsillectomy, with or without adenoidectomy, in children with and without obesity (body mass index above the 95th percentile). Mean age was 4.0 to 9.2 years and 7.8% were obese.

Overall 8.0% had a complication: 12.2% of children with obesity and 7.6% of those without. Obesity was associated with higher odds of a complication (OR 1.86, 95% CI 1.38 to 2.49; I-squared 77.5%). However, the excess was seen only in studies that counted events in the post-anaesthesia care unit; studies limited to ward events did not show an increase.

The authors suggest discharge may be safe for obese children who do not develop complications in recovery. That reading is based on subgroup comparisons of observational studies. It supports a closer look at local discharge pathways, with sleep-disordered breathing, age and comorbidity still driving individual decisions.

• Respiratory complications were 12.2% with obesity against 7.6% without (OR 1.86).
• The excess appeared in studies counting recovery room events, not in ward-only studies.
• Consider longer recovery observation for children with obesity.
• Weigh sleep-disordered breathing severity, age and comorbidity in each discharge decision.
• Follow your unit's day-case criteria; this review does not replace them.

Why it matters

It locates the added risk in time, which bears directly on who can safely go home the same day.

Don't overread it

The suggestion that discharge is safe after a trouble-free recovery is drawn from subgroup comparisons of observational studies.

The statistics, in plain English

An odds ratio of 1.86 means nearly double the odds of a respiratory complication, but I-squared of 77.5% shows the studies differed considerably. The split by where the event occurred is a subgroup analysis, which is weaker evidence than the overall finding.

Read the rest in the app

You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.

Get Daily Doctor — free

Scan to keep reading on your phone. No account needed to start.