Objective: (1) To analyze upper airway resistance syndrome (UARS) patients' polysomnographic characteristics, to lower the misdianosis of UARS. (2) To improve the understanding of UARS.
Methods: (1) Select 12 UARS patients diagnosed by PSG and continuous esophageal pressure measurement, the sleep structure, arousal index, apnea hyponea index (AHI) were analyzed, the body mass index (BMI), epworth sleepiness scale (ESS) were calculated. (2) Select 16 simple snoring cases as the control group, obstructive sleep apnea syndrome (OSAS) and UARS were ruled out by PSG and continuous esophageal pressure measurement for this group of cases. (3) Compare the 2 groups' first night PSG indexes (4) Compare the 2 nights PSG indexes of the UARS group, to see the continuous esophageal pressure measurement effects on their sleep.
Results: (1) There are no statistical difference of the 2 group's BMI and AHI. (2) Compared with the control group, UARS patients got higher arousal index and ESS score, more sleep stage 1 and stage 2, less sleep stage 3 and stage 4. (3) The 2 nights PSG indexes of UARS patients are not statistically different.
Conclusions: (1) Compared with simple snoring cases, the UARS patients have some special characteristics, i.e., higher arousal index, less deep sleep, and higher ESS score, combined with the clinical manifestations, it is possible to screen UARS patients. (2) No evident effects of continuous esophageal pressure measurement on UARS patients sleep.