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

Autonomic dysregulation is associated with cardiovascular consequences in obstructive
sleep apnea (OSA). This study aimed to investigate the effect of acute continuous positive …

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

Heart rate variability (HRV) can reflect the changes in the autonomic nervous system (ANS)
that are affected by apnea or hypopnea events among patients with obstructive sleep apnea …

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

Background Obstructive sleep apnoea (OSA) results in sympathetic overdrive. Increased
nocturnal heart rate variability (HRV) is a surrogate marker of autonomic disturbance. The …

Objective To evaluate circadian fluctuations and night/day ratio of Heart Rate Variability
(HRV) spectral components in patients with obstructive sleep apnea (OSA) in comparison …

Obstructive sleep apnea (OSA) is accompanied by structural alterations and dysfunction in
central autonomic regulatory regions, which may impair dynamic and static cardiovascular …

Respiration, RR interval, blood pressure, and other polysomnographic variables were
recorded in eight normal subjects and nine patients with untreated obstructive sleep apnea …

Objective Obstructive sleep apnea (OSA) is associated with sympathetic overactivity.
Intermittent hypoxemia and repetitive arousals are the proposed mechanisms; however, the …