Evaluation of Obstructive Sleep Apnea (OSA) Using Portable Sleep Testing (PST) Devices on an Inpatient Stroke Unit

Currently the standard of care at Lutheran General Hospital for patients does not include a STOP BANG pre-screening assessment, and portable sleep testing (PST) to identify sleep disordered breathing as a risk factor for AIS and TIA. Initially, patients will be asked questions if they have a history of OSA diagnosis, and if ever have been treated with a form of PAP. If the response is no, then the patient will be prescreened using the STOP BANG assessment tool and review of eligibility requirements. If positive STOP BANG and patient meets eligibility, the patient will have the PST device registered and the Watermark ARES 610 will be applied by the sub investigators. The patient will then undergo a portable sleep study which measures nasal pressure, respiratory effort, oxygen saturation, electrocardiogram and body position. If the device needs adjustment during sleep it can be adjusted by patient or Nursing Care Technician. The next morning the PST device, which is removed by sub investigators, will be delivered to the Sleep Laboratory, downloaded by the sleep technician in Sleep Lab, and data transmitted via the hospital network to the sleep specialist (Primary Investigator) for interpretation. If the PST study is interpreted as positive this will initiate a treatment plan by the sleep specialist for prescription of PAP and/or follow up. This patient who is positive will not require an additional polysomnogram for confirmation of the sleep apnea in the outpatient setting. If the result is inconclusive, but highly suspicious, this may require additional outpatient testing.