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Preoperative cardiac testing in children with very severe OSA had low diagnostic yield and rarely changed management. Risk appeared highest in obese adolescents with AHI >50 events/hour.
An exploratory analysis of the PATS randomized trial found early adenotonsillectomy reduced 12‑month systolic and diastolic BP percentiles versus watchful waiting in children with mild obstructive sleep‑disordered breathing, with larger DBP
The KATE trial (n=60) found no between-group difference in polysomnographic OAHI change after 3 years, though adenotonsillectomy improved disease-specific quality of life. Nearly 42% of watchful-waiting children later underwent surgery, sug
