Cerebral perfusion is not impaired in persons with moderate obstructive sleep apnoea when awake

Purpose It is well established that, together with a multitude of other adverse effects on health, severe obstructive sleep apnoea causes reduced cerebral perfusion and, in turn, reduced cerebral function. Less clear is the impact of moderate obstructive sleep apnoea (OSA). Our aim was to determine if cerebral blood flow is impaired in people diagnosed with moderate OSA. Methods Twenty-four patients diagnosed with moderate OSA (15 ≤ apnoea-hypopnea index (AHI)