The ResMed AirCurve 10 ASV is a bilevel adaptive servo-ventilation (ASV) machine for treating central and complex sleep-disordered breathing, including central sleep apnea (CSA), Cheyne-Stokes respiration, mixed apneas, and treatment-emergent (complex) sleep apnea, often alongside obstructive events. Using ResMed's clinically studied ASV algorithm, it targets your recent minute ventilation and adjusts inspiratory pressure support, and in ASVAuto mode the expiratory pressure, breath by breath to keep your breathing stable through the night. It includes the integrated HumidAir heated humidifier and works with ClimateLineAir heated tubing. Important safety information: ASV therapy is contraindicated in patients with symptomatic chronic heart failure (NYHA 2 to 4) and reduced left-ventricular ejection fraction (LVEF of 45% or less) with moderate-to-severe predominant central sleep apnea. The AirCurve 10 ASV is a prescription device; your physician sets and titrates the therapy.