Abstract
Nocturnal polysomnography (n-PSG) was conducted and evaluated in a 3-year-old boy with Apert syndrome and sleep apnea before and after adenoidectomy and cleft-palate surgery. The preoperative, apnea hypopnea index (AHI) was 20.2 times/hr, deep sleep 33.4%, and REM sleep 32.4%. Postoperatively, AHI was 13.6/hr, deep sleep 30.2%, and REM sleep 14.7%. Although apnea improved, hypopnea remained. Sleep disorder in this case was considered due to upper jaw low formation causing soft tissue abnormalities.