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The SleepStrip^TM: an apnoea screener for the early detection of sleep apnoea syndrome

¹ Scientific Laboratory Products, Ltd., Tel Aviv, Israel. ² Sleep Laboratory CHU A.Vésale, Free University of Brussels, Montigny-le-Tilleul, Belgium. ³ Med. Poliklinik of Philipps University, Marburg, Germany. ⁴ Sleep Laboratory, Technion-Israel Institute of Technology, Haifa, Israel

CORRESPONDENCE: P. Lavie, Sleep Lab, Gutwirth Building, Technion City, Haifa, Israel, 32000. Fax: 972 48323045

Keywords: apnoeas, hypopnoeas, received-operator characteristic curves, screening, SleepStrip

Received: March 23, 2001
Accepted August 2, 2001

Conflict of interest: P. Lavie is the scientific advisor to the company manufacturing the SleepStrip. N. Hadas is the company's R&D manager. T. Shochat is the Clinical Trials Director of the company. P. Lavie and N. Hadas are both shareholders in the company.

Sleep apnoea syndrome (SAS) is a largely undiagnosed and prevalent disorder. It is associated with cardiovascular morbidity as well as excessive daytime sleepiness and poor quality of life. In the present study the SleepStrip^TM, a novel screening device is introduced, which is low cost and easy to use and is aimed for widespread use.

The results of three independent validation studies, which compared the SleepStrip^TM score (Sscore) against "gold standard" polysomnographically-determined apnoea/hypopnoea index (AHI), are reported both separately and combined. Four hundred and two patients suspected of SAS underwent full polysomnography recordings concomitantly with the use of the SleepStrip^TM.

For all samples combined, the correlation between AHI and Sscore was r=0.73, sensitivity and specificity values ranged from 80–86% and 57–86% respectively, and the area under the curve derived from receiver-operating characteristic curves ranged from 0.81–0.92 at varying AHI thresholds.

Though not intended as a substitute for polysomnography, the SleepStrip^TM may provide initial screening information, which may be useful in both clinical and experimental settings.