Objective To investigate the clinical effectiveness of adenoidectomy and tonsillectomy in children with obstructive sleep apnea hypopnea syndrome(OSAHS).Methods Clinical data of eighty children undergoing adenoidectomy and tonsillectomy were reviewed,including polysomnography(PSG) and OSA-18 scale three months preoperative and six months post-operative.Effects of operation,changes of PSG parameters and OSA-18 scores were analyzed.Results Among eighty cases,there were seventy cured(87%),8 markedly effective(...