Quick Diagnosis in Obstructive Sleep Apnea Syndrome: WatchPAT-200

Background: Obstructive sleep apnea syndrome (OSAS) is a highly prevelant disorder and found in approximately 2-4% of middle-aged adults. Objectives: To assess the efficacy of WatchPAT-200 in the diagnosis of obstructive sleep apnea syndrome (OSAS). Patients and Methods: Patients suspected of having OSAS underwent overnight Level I polisomnography and simultaneously wore WatchPAT-200 in the sleep laboratory. Results: 51 adult patients included in the study. The average age was 45.3 +/- 10.5 years and the average body mass index (BMI) was 29.4 +/- 4.0 kg/m2. There was a high agreement between PSG and Watch PAT regarding apnea-hypopnea index, respiratory disturbance index and oxygen desaturation index. Significant but a low agreement was found in stage 1 and 2 of non-REM sleep when two methods compared. No agreement was found between PSG and WatchPAT regarding stage 3 and 4 of non-REM sleep. Very low agreement was found between PSG and WatchPAT regarding the REM sleep. Conclusions: WatchPAT-200 is an effective method in the diagnosis of OSAS.