Application of ApneaGraph in the diagnosis of sleep-related breathing disorders

Objective To observe the clinical value of ApneaGraph(AG) in the diagnosis of sleep-related breathing disorders.Methods AG and polysomnography(PSG) was performed in 40 male patients with sleep-related breathing disorders simultaneously.The apnea hypopnea index(AHI),hypopnea index(HI),apnea index(AI),obstructive apnea,central and mixed apnea,average oxygen saturation,the lowest oxygen saturation,the longest sleep apnea time and the body position was detected and the results were analyzed statistically.Results Significant differences were observed in AHI,AI,HI,obstructive apnea,central apnea,the longest sleep apnea time,supine body and average oxygen saturation between AG and PSG(P0.05).The differences in the mixed apnea,the lowest oxygen saturation,and the right or left body position between AG and PSG were not significant(P0.05).AHI and AI was correlated both in AG and PSG(AHI: r=0.896,P0.05;AI: r=0.699,P0.05).Twenty-four in 40 patients had a AHIupper% more than 60% and 4 in the other 16 patients had a AHIupper% less than 10%.Conclusions AG could not replace PSG but could identify the obstruction position in each patient.