ARES
Unicorder: a sleep-wearable, wireless physiological
recorder worn on the forehead that acquires and stores up to 4 nights
of nocturnal data. The ARES Unicorder measures blood oxygen saturation
(SpO2) and pulse rate (reflectance pulse oximetry), airflow (by
nasal cannula connected to a pressure transducer), respiratory effort
(a combined signal using pressure transducer sensing forehead venous
pressure, venous volume by photoplethysmography, and actigraphy),
snoring levels (calibrated acoustic microphone), head movement and
head position (accelerometers). When worn in the home, the ARES
provides a better profile of the patient's breathing during sleep
in his/her normal environment. Audio and visual indicators notify
the user when the Unicorder requires adjustment, thus increasing
reliability of the ARES in the home. The small size of the Unicorder
allows it to be comfortably worn in all sleep positions.
ARES Screener: a validated predictor
of OSA risk (those in need of a sleep study based on a predicted
apnea/hypopnea index > 5 events/hour) and OSA severity (i.e.,
minimal, mild, moderate or severe) using responses to questions
about body type, symptoms of daytime drowsiness, snoring, and other
sleep-related characteristics or health conditions associated with
OSA. The results can be used to rapidly screen large populations
to determine a prior probability of obstructive sleep apnea (OSA).
The results are also used to supplement the physiological data obtained
in the ARES Sleep Apnea Study.
ARES Software: provides an integrated
approach for data management and study processing. ARES Insight's
patented algorithms recognize changes in SpO2, pulse rate, head
movement, snoring level, and airflow that result from abnormal breathing
during sleep. The full disclosure recordings can be manually inspected
and the automated results can be edited by a physician. Automated
and edited events (ARES-RDI), positional influence on the ARES-RDI,
hypoxemia statistics, and ARES questionnaire results are calculated.
This information and any evidence suggestive of sleep disorders
other than OSA are summarized in a concise two-page report.
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