0377 Success Rates of Self-Applied Type 2 Studies in 191 Participants

Abstract

Abstract Introduction Wait times for the gold standard Type 1 polysomnograms are lengthy, and the pandemic has only increased the backlog. The need for having home sleep testing has grown yet Type 3 home sleep apnea tests (HSAT) can be inaccurate despite their popularity. In this study, we assessed the reliability of a self-applied in-home Type 2 sleep test using the Cerebra Sleep System. Methods 213 sleep files were collected from 191 participants that had their Type 2 device shipped to their home with no prior training. Participants watched videos and read written instructions to self-apply the full Type 2 system. The lab-quality in-home PSG included a recording of EEG (Fp1,Fp2), EOG (E1, E2), EMG (chin), EMG (legs), respiratory channels (one effort or two RIP belts), nasal flow, and pulse oximetry. The study was considered successful if the head unit (EEG/EOG/EMG), leg EMG, nasal flow, and oximetry were present for recordings of 3 and 4 hours in duration. Results Based on a 4-hour success criterion, 82.6% of studies were considered successful. This percentage increased with 3 hours (85.4%). When studies did fail at the 4-hour criterion, 10.8% had failures of all signals, 5.4% had failures of 4/5 signals, 10.8% had failures of 3/5 signals, 16.2% had failures of 2/5 signals, and 56.8% had failures of 1/5 signals. The head unit failed on 15 records (7%), the right leg on 9 records (4.2%), the left leg on 6 records (2.8%), the cannula on 12 records (5.6%), and the oximeter on 7 records (3.3%). For 13 participants who had a failed study, the issues were resolved in 6 cases (46%) with a second night of recording. Conclusion We found that the Cerebra Sleep System Type 2 in-home test showed reliable performance with a high success rate. When studies did fail, in most cases, a single signal was the source of the problem. For patients suspected of having sleep disordered breathing or other sleep disorders, Type 2 testing is a reliable, convenient, and safe alternative to in-lab polysomnography and performs similar success rates to Type 3 HSATs. Support (If Any)