 This study found that patients with obstructive sleep apnea, OSA, who have previously been treated with positive airway pressure, PAP, devices are less likely to develop chronic heart failure than those without such treatment. This suggests that early treatment of severe OSA with a PAP device may reduce the risk of developing chronic heart failure in patients diagnosed with obesity hypoventilation syndrome, OHS, associated with severe OSA. This article was authored by Mustafa Agassu, Baranis Awana, Jocelyn Inamo, and others.