Hill-Rom WAVE for Positional Obstructive Sleep Apnea at Home

Inclusion Criteria: * • 18-75 years of age * Willing and able to give informed consent * Able to speak and understand English * Previous sleep study prior to enrollment done based on previous clinical evaluation by the subject's treating physician in the course of usual clinical care: 1. overall AHI 5-40 events/hr. 2. at least 10% time spent in the supine and 10% time in the non-supine positions. 3. APOC I and APOC II 4. central respiratory events \< 50% of the total number of apneas and hypopneas * Using at least a queen-sized mattress when sleeping at home * Patients who meet the above criteria who have been prescribed CPAP or dental device but are non-adherent to treatment will be enrolled in the study. CPAP non-adherence will be defined as average nightly use \< 4hrs/night based on a download of the CPAP machine, or self- acknowledged discontinuation or non-regular of CPAP use. Exclusion Criteria: * • Incapable of giving informed consent * Under the age of 18 * Active titration of medication * Pregnancy, lactation (will be screened with urine pregnancy test) * Self-reported Substance abuse (current) * Excessive alcohol consumption * Excessive alcohol use is defined as: * More than 3 glasses of wine a day * More than 3 beers a day * More than 60 mL of hard liquor a day * Use of home oxygen * Presence of severe daytime sleepiness defined as an Epworth sleepiness scale score \> 16 or a prior history of falling asleep while driving * Presence of cardiac pacemaker or automatic implantable cardioverter-defibrillator (AICD). * Unstable medical problem such as uncontrolled hypertension. * Body Mass Index (BMI) \>45 kg/m2 * Any other clinically significant condition that, in the opinion of the investigators, might put the subject at risk of harm during the study or might adversely affect the interpretation of the study data.