Polysomnography Validation of the Sansa Device

Inclusion Criteria: * 18 years of age or older * able to read, understand, and sign informed consent documentation * willing to sleep with the Sansa device and PSG simultaneously in the sleep clinic * suspected or known to have sleep disordered breathing Exclusion Criteria: * exhibit deformities of the chest that would interfere with sensor placement * have broken or injured skin that would interfere with sensor placement * known to experience adverse reactions to medical-grade adhesive * diagnosed with hypoventilation * diagnosed with severe chronic obstructive pulmonary disease * exhibit symptoms of significant non-respiratory sleep disorders * diagnosed with a neuromuscular disorder leading to muscle weakness * chronically use supplemental oxygen at night or during the day * pregnant * scheduled to undergo titration of a hypoglossal nerve stimulation device * undergo permanent pacing with an implanted pacemaker * diagnosed with congestive heart failure with an ejection fraction less than 45%