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Sex differences in obstructive sleep apnea: a population-based study from northeastern Germany.

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Obstructive sleep apnea (OSA) shows sex-specific differences in sleep stage distribution. Women with OSA experience higher apnea-hypopnea index (AHI) during REM sleep, suggesting REM AHI is crucial for diagnosis, especially in females.

Keywords:
Epworth sleepiness scaleObstructive sleep apneaPolysomnographyREM sleepSex differences

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Area of Science:

  • Sleep Medicine
  • Respiratory Physiology
  • Epidemiology

Background:

  • Obstructive sleep apnea (OSA) is a prevalent sleep disorder, more commonly diagnosed in men.
  • Understanding sex-specific differences in OSA is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To investigate sex-specific variations in sleep stage distribution among individuals with OSA.
  • To analyze differences in subjective daytime sleepiness between men and women with OSA.
  • To specifically examine the distribution of the apnea-hypopnea index (AHI) across REM and non-REM sleep stages.

Main Methods:

  • Population-based cross-sectional study utilizing the SHIP-TREND-0 cohort.
  • Standardized polysomnography to identify 604 participants with OSA (AHI ≥ 5).
  • Epworth Sleepiness Scale (ESS) used to assess daytime sleepiness; sex differences analyzed descriptively.

Main Results:

  • Females were older and had higher BMIs compared to males.
  • Women exhibited higher AHI values during REM sleep versus non-REM sleep; men showed a more balanced AHI distribution.
  • Women experienced longer REM sleep latency.

Conclusions:

  • Significant sex-specific differences exist in the distribution of obstructive events across sleep stages.
  • Apnea-hypopnea index (AHI) during REM sleep warrants greater attention in OSA diagnosis and severity assessment, particularly for women.
  • Further population-based research is needed to validate these findings and their clinical implications.