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 …

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

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

Heart rate (HR) is modulated by the combined effects of the sympathetic and
parasympathetic nervous systems. Therefore, measurement of changes in HR over time …

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

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

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 …

Autonomic dysfunction is recognized to contribute to cardiovascular consequences in
obstructive sleep apnea/hypopnea syndrome (OSAHS) patients who present predominant …