WatchPAT300

WatchPAT offers Simple, Accurate and Reliable Home Sleep Apnea Testing

WatchPAT 300 is an innovative diagnostic Home Sleep Apnea Test (HSAT) that utilizes the proprietary peripheral arterial tone signal (PAT) to enable simple and accurate obstructive sleep apnea (OSA) testing while avoiding the complexity and discomfort associated with traditional air-flow based systems.

WatchPAT measures up to 7 channels (PAT signal, heart rate, oximetry, actigraphy, body position, snoring and chest motion) via three points of contact

Within one-minute post study, the raw data is downloaded, and auto-scored report generated with differentiating obstructive and central events, providing an AHI, RDI and ODI based upon True Sleep Time and Sleep Staging.

Key Features


True Sleep Time


Sleep Architecture


Central Sleep Apnea


Accurate Auto Scoring


7 Channels

WatchPAT 300 is an innovative diagnostic Home Sleep Apnea Test (HSAT) that utilizes the proprietary peripheral arterial tone signal (PAT) to enable simple and accurate obstructive sleep apnea (OSA) testing while avoiding the complexity and discomfort associated with traditional air-flow based systems.

WatchPAT measures up to 7 channels (PAT signal, heart rate, oximetry, actigraphy, body position, snoring and chest motion) via three points of contact

It’s Simple, 3 points of contact for outstanding patient compliance with 98% success rate1
It’s Accurate, WatchPAT is clinically validated with an 89% correlation to PSG2.
It’s Reliable, The PAT signal is an approved measure in the 2017 AASM HSAT Clinical Practice Guidelines for Adults with OSA.

Improved Accuracy with Sleep Architecture

WatchPAT’s clinically validated Sleep Architecture provides information on sleep staging including sleep efficiency, sleep latency and REM latency3-4. It also provides the added value of detecting REM related sleep apnea with REM and non-REM AHI.

Prevent up to 20% Misdiagnosis with True Sleep Time

  • WatchPAT calculates AHI and RDI using the patient's True Sleep Time rather than the recorded time used in most commercially available HSAT’s
  • WatchPAT's True Sleep Time reduces the risk of misdiagnosis and misclassification that has been reported up to 20% with other HSAT's using total recording time5
  • True Sleep Time improves the accuracy

High Accuracy with Central Sleep Apnea Identification

WatchPAT has been clinically proven to detect all types of apnea events.

The Central PLUS Module enables specific identification of Central Sleep Apnea (CSA) and Percent of Sleep Time with Cheyne-Stokes Respiration

Automated Report in Just Seconds

Within one-minute post study, the raw data is downloaded, and auto-scored report generated with differentiating obstructive and central events, providing an AHI, RDI and ODI based upon True Sleep Time and Sleep Staging.


WatchPAT Resources

FAQ|Downloads|Videos|Clinical Data |

  • Data on file
  • Yalamanchali S, Farajian V, Hamilton C, Pott TR, Samuelson CG, Friedman M. Diagnosis of obstructive sleep apnea by peripheral arterial tonometry: meta-analysis. JAMA Otolaryngol. Head Neck Surg. December 2013;139(12):1343-1350
  • Hedner J. et al. A Novel Adaptive Wrist Actigraphy Algorithm for Sleep-Wake Assessment in Sleep Apnea Patients. SLEEP, Vol. 27, No. 8, 2004 :1560-1566
  • Hedner J. et al. Sleep Staging Based on Automimcal Signals: A Multi-Center Validation Study. JCSM. Journal of Sleep Medicine, Vol. 7, No. 3, 2011: 301 – 306
  • Comparison of AHI using recording time versus sleep time Schutte – Rodin et al., J Sleep Abs supl 2014, p. A373