Intracapsular tonsil surgery cut severe childhood sleep apnoea to near normal, with regrowth to watch

Design

Systematic review with exploratory meta-analysis

Population

14 studies of non-syndromic children with severe obstructive sleep apnoea (11 with extractable data)

Primary outcome

Change in apnoea-hypopnoea index

Effect

AHI 19.6 to 3.0 events/hour; reduction 16.5 (95% CI 14.2 to 18.8); regrowth or revision 2-15%

This systematic review examined intracapsular tonsillectomy or tonsillotomy, combined with adenoidectomy, in children with severe obstructive sleep apnoea, excluding syndromic and cleft populations. Fourteen studies were included and 11 provided before-and-after sleep study data.

The weighted apnoea-hypopnoea index fell from 19.6 to 3.0 events an hour, a reduction of 16.5 events an hour (95% CI 14.2 to 18.8). Bleeding after surgery was reported as very low. Tonsillar regrowth and revision surgery ranged from about 2% to 15%, depending on technique and length of follow-up. No intracapsular technique or instrument was clearly better than another.

The studies are mostly uncontrolled before-and-after series, so this shows that children improve, not that intracapsular surgery is as good as total tonsillectomy in severe disease. The trade-off is clear enough to discuss with families: less pain and bleeding now, against a small chance of regrowth and the need for follow-up.

• Consider intracapsular tonsillectomy with adenoidectomy as an option for non-syndromic children with severe obstructive sleep apnoea.
• Discuss the trade-off with families: lower pain and bleeding against a 2-15% chance of regrowth or revision.
• Arrange follow-up for residual symptoms such as snoring and witnessed apnoeas after surgery.
• Repeat a sleep study when symptoms persist after surgery in severe disease.

Why it matters

Severe disease has often been considered a reason to avoid partial tonsil surgery; these series suggest it still works well.

Don't overread it

Most included studies were uncontrolled; the review does not show intracapsular surgery is equivalent to total tonsillectomy in severe disease.

The statistics, in plain English

A fall in AHI from about 20 to 3 events an hour moves most children from severe to mild or normal. The interval around the 16.5-event reduction is narrow, but pooled before-and-after data cannot account for children who would have improved anyway.

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.