Adenotonsillectomy for Snoring and Mild Sleep Apnea in Children: A Randomized Clinical Trial | Sleep Medicine | JAMA

Question 
Among children who snore without frequent obstructive events, does early adenotonsillectomy compared with watchful waiting with supportive care improve neurodevelopment, behavior, or other symptoms at 12-month follow-up?

Findings 
In this randomized clinical trial of 458 children with mild sleep-disordered breathing (SDB), adenotonsillectomy compared with watchful waiting resulted in no significant differences in executive function or attention at 12 months. The adenotonsillectomy group had improved quality of life, symptoms, behavior, and blood pressure, which were among the secondary outcomes measured.

Meaning 
In children with mild SDB, adenotonsillectomy resulted in no statistically significant differences in changes in executive function or attention but led to improved secondary outcomes including symptoms, behavior, and blood pressure.

Importance 
The utility of adenotonsillectomy in children who have habitual snoring without frequent obstructive breathing events (mild sleep-disordered breathing [SDB]) is unknown.

Objectives 
To evaluate early adenotonsillectomy compared with watchful waiting and supportive care (watchful waiting) on neurodevelopmental, behavioral, health, and polysomnographic outcomes in children with mild SDB.

Design, Setting, and Participants 
Randomized clinical trial enrolling 459 children aged 3 to 12.9 years with snoring and an obstructive apnea-hypopnea index (AHI) less than 3 enrolled at 7 US academic sleep centers from June 29, 2016, to February 1, 2021, and followed up for 12 months.

Intervention 
Participants were randomized 1:1 to either early adenotonsillectomy (n = 231) or watchful waiting (n = 228).

Main Outcomes and Measures 
The 2 primary outcomes were changes from baseline to 12 months for caregiver-reported Behavior Rating Inventory of Executive Function (BRIEF) Global Executive Composite (GEC) T score, a measure of executive function; and a computerized test of attention, the Go/No-go (GNG) test d-prime signal detection score, reflecting the probability of response to target vs nontarget stimuli. Twenty-two secondary outcomes included 12-month changes in neurodevelopmental, behavioral, quality of life, sleep, and health outcomes.

Results 
Of the 458 participants in the analyzed sample (231 adenotonsillectomy and 237 watchful waiting; mean age, 6.1 years; 230 female [50%]; 123 Black/African American [26.9%]; 75 Hispanic [16.3%]; median AHI, 0.5 [IQR, 0.2-1.1]), 394 children (86%) completed 12-month follow-up visits. There were no statistically significant differences in change from baseline between the 2 groups in executive function (BRIEF GEC T-scores: −3.1 for adenotonsillectomy vs −1.9 for watchful waiting; difference, −0.96 [95% CI, −2.66 to 0.74]) or attention (GNG d-prime scores: 0.2 for adenotonsillectomy vs 0.1 for watchful waiting; difference, 0.05 [95% CI, −0.18 to 0.27]) at 12 months. Behavioral problems, sleepiness, symptoms, and quality of life each improved more with adenotonsillectomy than with watchful waiting. Adenotonsillectomy was associated with a greater 12-month decline in systolic and diastolic blood pressure percentile levels (difference in changes, −9.02 [97% CI, −15.49 to −2.54] and −6.52 [97% CI, −11.59 to −1.45], respectively) and less progression of the AHI to greater than 3 events/h (1.3% of children in the adenotonsillectomy group compared with 13.2% in the watchful waiting group; difference, −11.2% [97% CI, −17.5% to −4.9%]). Six children (2.7%) experienced a serious adverse event associated with adenotonsillectomy.

Conclusions 
In children with mild SDB, adenotonsillectomy, compared with watchful waiting, did not significantly improve executive function or attention at 12 months. However, children with adenotonsillectomy had improved secondary outcomes, including behavior, symptoms, and quality of life and decreased blood pressure, at 12-month follow-up.