Obstructive Sleep Apnea is a common respiratory disorder characterized by recurrent
nocturnal episodes of normal breathing interruption due to upper airway total or partial …

Abstract Study Objectives Patients with obstructive sleep apnea (OSA) exhibit
heterogeneous heart rate variability (HRV) during wakefulness and sleep. We investigated …

Background: Many patients with severe obstructive sleep apnea (OSA) do not complain of
excessive daytime sleepiness (EDS), possibly due to increased sympathetic nervous activity …

Obstructive sleep apnea (OSA), a heterogeneous and multifactorial sleep related breathing
disorder with high prevalence, is a recognized risk factor for cardiovascular morbidity and …

Obstructive sleep apnea (OSA) is a highly prevalent condition, resulting in recurrent hypoxic
events, sleep arousal, and daytime sleepiness. Patients with OSA are at an increased risk of …

The objective of this study was to examine heart rate variability (HRV) among sleep stages
in obstructive sleep apnea (OSA) patients. The study was retrospective within subjects and …

Low long-term heart rate variability (HRV), often observed in obstructive sleep apnea (OSA)
patients, is a known risk factor for cardiovascular diseases. However, it is unclear how the …

Heightened sympathetic activity plays a role in the cardiovascular sequelae of obstructive
sleep apnoea (OSA). Cardiac autonomic function may be assessed non‐invasively by …

Background: Cyclic variation of the heart rate is observed during apneic spells in obstructive
sleep apnea (OSA). We hypothesized that autonomic changes would affect frequency …

Background—Enhanced nocturnal heart rate variability (HRV) has been evoked in sleep-
related breathing disorders. However, its capacity to detect obstructive sleep apnea …