Adenotonsillectomy (AT) is one of the most common pediatric surgeries performed, and is estimated to comprise 530,000 procedures in children under 15 years of age. Historically, the leading cause for these procedures was recurrent infections; however, more recently surgical indications include sleep disordered breathing and obstructive sleep apnea (OSA). Pre-operative polysomnography (PSG) is recommended for all children with suspected OSA prior to undergoing AT, although it is unclear whether sleep disordered breathing characteristics predict post-operative outcomes or complications.