RESUMO
OBJECTIVE@#To study the relationship between obstructive sleep apnea-hypopnea syndrome (OSAHS) and insulin resistance (IR), then evaluate the effectiveness of the improved Uvulopalatopharyngoplasty (MUPPP) and continuous positive airway pressure (CPAP) on IR.@*METHOD@#Fourteen patients of OSAHS were treated by MUPPP, and sixteen patients of OSAHS were treated by CPAP. All index of the nocturnal polysomnography, fasting plasma insulin, fasting plasma glucose, insulin and blood sugar of 2 hours after meal were analyzed before and after therapy, and 10 patients of OSAHS were untreated by MUPPP or CPAP. The other 33 cases of non-OSAHS were selected as control group. According to the model of HOMA and the formula of LiGuangwei,insulin resistance index and insulin sensitivity index were calculated, respectively.@*RESULT@#There were significant differences between OSAHS group before treatment and control group, before and after treatment, after treatment and untreated group (P < 0.01 or P < 0.05). There was very significant correlation between IAI and LSaO2 (r = 0.633),and there was significantly negative correlation between IAI and AHI (r = -0.654).@*CONCLUSION@#OSAHS is an important risk factor for the development of insulin resistance. It shows that OSAHS may develop IR of the patients and the treatment of MUPPP and CPAP can improve insulin sensitivity.