Objective To find out the differences of sleep posture between normal children and those with obstructive sleep apnea hypopnea syndrome(OSAHS),and assess the effects of sleep posture on the children with OSAHS.Methods The results of polysomnography(PSG) of 385 children diagnosed as OSAHS by polysomnography were compared with that of 161 children who matched the former in age and gender(Controls).The effects of different sleep posture on obstructive apnea,hypopnea index(AHI) and apnea index(AI) were analyzed.Results For the children with OSAHS when sleeping,the percentages of sleep time in different posture were 45.4%+36.3% in supine posture,39.5%+34.5% in side posture and 15.1%+32.6% in prone posture,respectively;while in control group,the correspond percentages were 32.8%+24.5%,54.7%+23.9% and 12.5%+17.2%,respectively.Comparing the two groups,significant differences existed on the sleep time in both supine and side posture(P0.05).Children with OSAHS spent more time in supine posture and less time in side posture than those children in control group(P0.05).For the children with OSAHS,the average AHI and obstructive AI in three sleep-related postures were 14.5 and 3.80,respectively.The values of both AHI and AI in supine posture were significantly greater than that in side or prone posture(P

OBJECTIVE To explore a more effective method of detecting sleep respiratory events in children. METHODS Thirty-eight children were tested with HypnoPTT and 31 with polysomnography (control). The test parameters and operative methods were compared. RESULTS In addition to the parameters comm.on to both HypnoPTT and polysomnography, inspiratory flow limitation and spontaneous microarousal can be measured using HypnoPTT and fewer electrodes were needed. CONCLUSION HypnoPTT is a convenient method characterized by less sleep disturbance and credible results, rendering it is especially suitable for pediatric cases. Pulse transit time is a useful parameter for diagnosing the sleep respiratory disease.

OBJECTIVE To evaluate the clinic feature and therapeutic principles and to improve curative effect of mucoepidemoid carcinoma originated in nasal cavity and nasal sinuses. METHODS A restrospective review of clinic features ,therapeutic methods and consequences was undertaken in thirty cases with nasal cavity and nasal sinuse mucoepidemoid carcinoma and treated at the 81st hospital of CPLA from 1990 to 2001. RESULTS Twenty patients received surgery、radiotherapy and chemotherapy, of which sixteen survived in five to ten years follow-up . Six patients received surgery and radiotherapy, of which four survived in five years follow-up. Only one out of two patients who received radiotherapy and chemotherapy respectively survived in five years follow-up. The total five years survival rate was 73 %(22/30). CONCLUSION CT or MRI scan may be helpful to evaluate the location and scale of mucoepidemoid carcinoma.Final diagnosis rely on histopathology examination. Early radical resection combined with radiotherapy and chemotherapy pre- or postoperatively could improve five-year-survival rate and reduce recurrence rate.