Cyclic Alternating Pattern in Obstructive Sleep Apnea Patients with versus without Excessive Sleepiness.

Background: One of the main hypotheses on the development of daytime sleepiness (ES) is increased arousal in obstructive sleep apnea (OSA). Cyclic alternating pattern (CAP) is considered to be the main expression of sleep microstructure rather than arousal. Therefore, we aimed to investigate whether there is any difference between OSA patients with versus without ES in terms of the parameters of sleep macro- and microstructure and which variables are associated with Epworth Sleepiness Scale (ESS) score.

POEMS syndrome with peripheral and central nervous system demyelination: case report.

Introduction: POEMS syndrome is a rare, atypical plasma cell proliferative disorder. Predominantly motor chronic demyelinating polyneuropathy and monoclonal plasma cell disease are the major clinical features of POEMS syndrome. Demyelinating lesions of the central nervous system have been reported only in 2 patients with POEMS syndrome up to now.