Sleep-disordered breathing and cerebral small vessel disease-acute and 6 months after ischemic stroke.

Purpose: Sleep-disordered breathing (SDB) occurs frequently after stroke and is associated with poor functional outcome and increased mortality. The purpose of this study was to detect changes in SDB over time after acute ischemic stroke and investigate relationships between SDB and stroke etiologies with focus on cerebral small vessel disease.

Methods: From May 2015 to August 2016, we conducted an observational study of 99 patients with mild to moderate stroke (median age: 68 years, range 36-88; 56% men).

Assessing low-frequency oscillations in cerebrovascular diseases and related conditions with near-infrared spectroscopy: a plausible method for evaluating cerebral autoregulation?

Background: Cerebral autoregulation (CA) is the brain's ability to always maintain an adequate and relatively constant blood supply, which is often impaired in cerebrovascular diseases. Near-infrared spectroscopy (NIRS) examines oxygenated hemoglobin (OxyHb) in the cerebral cortex. Low- and very low-frequency oscillations ( and to 0.