Keywords Tramadol;Analgesia;Patient-Controlled;Sl eep Apnea Syndromes;Uvula;Palate;SurgicalProcedures;Operative;

• 关键词曲马多;镇痛;病人控制;睡眠呼吸暂停综合征;悬雍垂;腭;外科手术;