Nikolas
Created page with "Obstructive sleep apnoea (OSA) is characterised by repetitive episodes of apnoea or hypopnea lasting > 10 seconds. These episodes are caused by upper airway obstruction occurring during sleep, and result in reductions in blood oxygen saturation. The hypoxaemia triggers the sympathetic nervous system, briefly arousing the person from sleep. Central sleep apnoea is related but not the same. In central sleep apnoea, there is no obstruction but the respiratory centre stops..."