ASV (Adaptive Servo-Ventilation)

ASV is a type of positive airway pressure (PAP) therapy that is designed to treat central sleep apnoea, including a type of breathing called Cheyne-Stokes respiration (CSR). ASV automatically adjusts to the magnitude of support needed by providing minimal pressure during the overbreathing phase or normal breathing, and increases support during underbreathing (hypopnea or apnoea)   See also: Apnea; Central sleep apnea; Periodic breathing; Cheyne-Stokes respiration (CSR)