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Updated: May 3, 2026

Drug-Induced Sleep Endoscopy DISE with Target Controlled Infusion TCI and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
[Characteristics of respiratory disturbance during REM sleep in OSAHS]
Xuehai Xu1, Xianliang Fan, Yali Peng
1Department of Otolaryngology, Lanzhou General Hospital of Lanzhou Military Command, Lanzhou, 730050, China.
Objective:
To study the characteristics of respiratory disturbance during REM sleep in OSAHS through the signals surveyed by polysomnography (PSG).
Method:
The result of sleeping monitoring of 180 cases with OSAHS by PSG was reviewed, the AHI and the RIT index was used to evaluate the severity in different sleep stage as in REM and N-REM stage to find out the characteristics of the respiratory disturbance.
Result:
The study showed that AHI index in mild group increased greatly in REM period (P < 0.05), but no significant changes between the moderate and severe groups. And the lowest oxygen saturation (LSaO2) was lower during REM stage than that during N-REM stage (P < 0.05).
Conclusion:
(1) The time of REM in OSAHS patients often decreases according to their severity. (2) The respiratory disturbance during the stage REM is much severe than during the stage N-REM. The main manifestation is that the time of apnea-hypopnea is more longer and the AHI index does not significantly change. (3) The RIT index is more closely related to the severity of respiratory disturbance than AHI index.
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