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The term REM-related obstructive sleep apnea (OSA) is used loosely by sleep clinicians when the polysomnogram (PSG) reveals obstructive apneas and hypopneas that occur predominantly or exclusively during REM sleep.
In 2074 individuals with at least 30 minutes of REM sleep, REM AHI3a, considered categorically in those with REM AHI3a ≥ 20/hour, was associated with increased risk for hypertension after controlling for age, sex, BMI, waist-to-hip ratio, total sleep time, smoking, alcohol consumption, and non-REM AHI3a [20].
Obstructive sleep apnoea (OSA) can occur in both rapid eye movement (REM) and non-REM sleep or be limited to REM sleep, when the upper airway is most prone to collapse due to REM sleep atonia. Respiratory events are usually longer and more desaturating in REM than in NREM sleep.
This condition of CPAP withdrawal during REM sleep led to reemergence of severe OSA during REM sleep (REM AHI of 46.1±3.5 events/h) accompanied by REM sleep fragmentation without any effect on total sleep time, sleep efficiency and NREM slow wave sleep.
Deciding the threshold for treatment in terms of the level of OSA severity (apnea–hypopnea index [AHI] and/or daytime sleepiness) is also a common clinical dilemma because OSA represents a heterogeneous group of patients with a multifactorial etiology.
19 wrz 2018 · This argument would suggest that a person who spends 25% of total sleep time in REM sleep, with a non-REM apnea hypopnea index (AHI) using 4% oxygen desaturation criteria (AHI4%) of 4/h and REM AHI4% of 24/h with an overall AHI4% of 9/h, would experience increased risk in comparison to an individual with an overall AHI4% of 9/h composed of REM ...
2 sty 2024 · The Apnea-Hypopnea Index (AHI) quantifies the severity of sleep apnea by counting the number of apneas and hypopneas during sleep. Apneas are periods when a person stops breathing and hypopneas are instances where airflow is blocked, causing shallow breathing.
