Sleep
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Pulse oximetry (Sp02) is a key parameter monitored during polysomnographic studies, and different acquisition settings can be employed to obtain this data. The purpose of this study was to determine if the use of different settings would significantly influence scoring of respiratory disturbance events (RDE). ⋯ These data confirm the impact of different oximetric recording settings on the profile of RDEs and the importance of reporting such acquisition settings in studies of sleep disordered breathing.
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Vivago WristCare is a new activity monitoring device, which allows long-term online monitoring of the activity of the user. This study evaluates the ability of the device to discriminate sleep/wake patterns during nighttime and during napping. ⋯ The performance of the WristCare can be assumed to be well comparable to actigraphy in sleep/wake studies. The study suggests that the device may be used in long-term monitoring of sleep/wake patterns with similar performance to actigraphy.
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Under particular conditions, a patent foramen ovale (PFO) can potentially give rise to ischemic stroke by means of paradoxical embolization, due to right-to-left shunt. Our study aimed to evaluate the presence of right-to-left shunt in patients with obstructive sleep apnea syndrome (OSAS) and diagnosed PFO during sleep. ⋯ In the nocturnal sleep period, right-to-left shunt can occur during single obstructive apneas in patients with OSAS and concomitant presence of PFO. This can be a risk factor for cerebrovascular diseases. This risk could probably increase proportionally to the respiratory disturbance index of these patients.
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The aim of the study was to determine the role of respiratory events, assessed by means of esophageal pressure monitoring, during arousals from slow wave sleep in adult patients with parasomnias. ⋯ Sleep-disordered breathing seems to be frequently associated with parasomnias during slow wave sleep, emphasizing the utility of performing esophageal pressure monitoring in cases of sleep walking or night terrors.
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Rapid-eye-movement (REM) sleep behavior disorder (RBD) is thought to result from a dysfunction of the brainstem structures that regulate physiologic REM sleep muscle atonia. Proton magnetic resonance spectroscopy (1H-MRS) is a noninvasive method that allows detection of in vivo neuronal dysfunction in localized brain areas. The aim of our study was to investigate whether 1H-MRS can detect brainstem abnormalities in patients with idiopathic RBD. ⋯ The results do not suggest that marked mesopontine neuronal loss or 1H-MRS detectable metabolic disturbances occur in idiopathic RBD.