More sleep-disordered breathing Central Sleep Apnea (CSA) treatment options ResMed helps you to guide your patient to the best and appropriate OSA treatment options available. These include CPAP, PAP, APAP, bilevel therapy and oral appliance therapy. Types of sleep-disordered breathing ResMed explains the differences between three types of sleep-disordered breathing (SDB): Obstructive Sleep Apnoea (OSA), Central Sleep Apnoea (CSA) and mixed or complex sleep apnoea. Common symptoms of SDB The first sign of a sleep disorder is snoring, even though many patients won’t identify that as a sign of something more serious. There are other common symptoms too.