[A preliminary clinical classification study in REM related obstructive sleep apnea]

Area of Science:

• Sleep Medicine
• Respiratory Medicine

Background:

• Obstructive Sleep Apnea (OSA) is a common sleep disorder.
• Understanding subtypes of OSA, like REM-related OSA (RrOSA), is crucial for effective treatment.
• Current classification may not fully capture the nuances of REM sleep involvement in OSA.

Purpose of the Study:

• To introduce a novel classification method for REM-related Obstructive Sleep Apnea (RrOSA).
• To explore the clinical significance and potential applications of the RrOSA classification.
• To investigate the characteristics and subtypes within the RrOSA group.

Main Methods:

• Recruited 250 patients diagnosed with OSAS via polysomnography (PSG).
• Defined RrOSA based on the ratio of Apnea-Hypopnea Index (AHI) during REM and non-REM sleep (R > 1).
• Classified RrOSA into subtypes (Ia, Ib, II) and analyzed PSG parameters, ESS, BMI, and neck circumference.

Main Results:

• A significant gender difference was observed between RrOSA and non-RrOSA groups (P<0.05).
• No significant differences in ESS and BMI were found among RrOSA subtypes.
• No significant differences in REM_AHI and REM_ODI were noted between RrOSA and non-RrOSA groups.

Conclusions:

• The new RrOSA classification enhances understanding of OSAS development.
• RrOSA may represent a distinct OSA subtype with potential for progression.
• This classification could aid in personalized CPAP treatment strategies.