Sleep signal processing for disordered breathing event detection and severity estimation Public Deposited
Sleep-disordered breathing (SDB) is recognized as a widespread, under-diagnosed condition associated with many detrimental health problems. The condition places a signiﬁcant burden on the individual and the healthcare system alike, with untreated SDB patients utilizing national health resources at twice the usual rate. The most common form of SDB is obstructive sleep apnea, characterized by frequent transient reductions of oxygen saturation, cessations of ventilatory airﬂow, and collapse or obstruction of the upper airway. Other forms of SDB include hypopnea, characterized by a reduction of ventilatory airﬂow; central apnea, with a cessation of ventilatory eﬀort and airﬂow; and mixed apnea, a combination of central and obstructive apnea.