Authors (including presenting author) :
To Wing Hei Zion (1)(2), Lam Fong Yee (1)(2), Sum Yun Sang (1), Hui Sin Chun (1), Ng Chun Nam (1), Chan Miu Yue (1),
Abdullah Victor James (1)(2), Ku Ka Ming Peter (1)(2)
Affiliation :
(1) Department of Otorhinolaryngology Head and Neck Surgery, United Christian Hospital,
(2) Department of Otorhinolaryngology, Head and Neck Surgery, The Chinese University of Hong Kong
Introduction :
Patients suffering from symptoms of obstructive sleep apnea (OSA) often wait a long time for a polysomnography (PSG), leading to a delay in treatment. The home sleep study has been widely used as an alternative for the PSG, but it lacks the electroencephalography (EEG) signals which can accurately measure the sleep cycle, is questionable whether it can replace PSG as the gold standard of investigation. The objective of this study is to evaluate whether the Waveguard EEG cap is an effective and efficient tool for the utilization in home sleep study to improve the accuracy of the test
Objectives :
The objective of this study is to evaluate whether Waveguard EEG is an effective and efficient tool for the utilization in polysomnography.
Methodology :
Patients with suspected OSA were invited to perform a home sleep study using the Waveguard EEG cap with NoxA1. On the second night, patients were admitted for an overnight PSG with traditional EEG leads for evaluation. Other inclusion criteria includes adults who are 18years old or above, with a head circumference between 51-56cm.
Result & Outcome :
A total of 10 subjects were recruited. The RDI scorings was done separately in three groups: NoxA1 without EEG cap, NoxA1 with the EEG cap and lab PSG. The paired sample tests were done to compare the RDIs of the three groups. There was no statistically significant difference between the lab PSG and NoxA1 with the EEG group (two-sided p 0.152). However, a significant difference was observed between the lab PSG and NoxA1 without EEG groups, and between NoxA1 with EEG and without EEG groups (two-sided p=0.026 and 0.006 respectively).
The study proves that the Waveguard EEG cap result is comparable to the lab PSG, and it provides a more accurate scoring for OSAS compared to using NoxA1 alone. It is a safe and accurate device to be used in home sleep study.
