A Prospective Study to Evaluate the WP in Comparison to PSG in Patients Suspected of Sleep Disorders

Subjects suspected of having sleep disorders who are referred to a sleep study will be screened for potential participation in the study, according to the inclusion and exclusion criteria. Additionally, patients with comorbidities associated with central sleep apnea may be referred from cardiology related divisions, and screened for participation in the study. Recruited patients will be asked to sign an informed consent form. Subject demographic and medical information will be acquired from the subject himself and/or from the subject's medical chart and will be recorded on the appropriate case report forms.

The subjects will be admitted to the clinical sleep laboratory for one night, during which they will undergo conventional full night PSG recording with the standard PSG channels. The WP with finger probe and chest sensor will be worn by the subject simultaneous to PSG. A PSG system will be recording the signals and manual scoring will be performed blinded - without access to WP data. The WP analysis will be done automatically.

Inclusion criteria

• Age between 12-99
• Subjects that are able to read understand and sign the informed consent form of the study or by parents of subjects that are less than 18 years of age that are referred to undergo an overnight sleep study in the clinical sleep laboratory
• Subjects suspected of having sleep disorders or with comorbidities relevant to central sleep apnea.

Exclusion criteria

• Permanent pacemaker: atrial pacing or VVI without sinus rhythm.
• Finger deformity that precludes adequate sensor appliance.