TY - JOUR
AU - Kavey, NB
AB - Abstract Introduction: Polysomnography (PSG) is the gold standard for evaluating sleep. Ambulatory monitoring alternatives offer advantages over PSG in terms of cost, availability and convenience. In this study we compared Itamar Medical’s Watch-PAT sleep scoring to PSG’s in normal and insomnia subjects. Methods: Subjects (n=17) were simultaneously recorded overnight using PSG and Watch-PAT. Age range was 19 - 68, and included 8 normals [(Insomnia Severity Index (ISI) 0–7], 5 mild insomniacs (ISI 8–14) and 4 moderate to severe insomniacs (ISI 15–28), 11 females and 6 males. PSG scoring was performed by a Registered Polysomnographic Technician. Watch-PAT scores sleep and wakefulness using actigraphy, and stages sleep as light sleep (LS), deep sleep (DS), rapid-eye-movement sleep (REMS) with proprietary algorithms utilizing peripheral autonomic tone. For comparison purposes, non-REMS stages 1 and 2 were classified LS, and stage 3, DS. Results: The sleep concordance index [number of epochs scored the same by both systems: wakefulness, LS, DS or REMS) divided by total number of epochs] was 63.4%. The majority of the misscoring resulted from some quiet wakefulness being misscored LS (12.3 ± 1.8%), and some stages 1, 2 being misscored DS (6.6 ± 1.0%). The concordance index was higher in subjects with an ISI 15+ and 8–14, compared to normals (69.8 ± 5.3%, 68.8 ± 2.5% and 56.8 ± 4.3%, respectively). Watch-PAT was equally reliable in evaluating sleep of females and males (64.3 ± 3.9% vs. 61.8 ± 4.0%) and across age groups (age 46–72: 66.3 ± 3.2%, age 31–45: 61.1 ± 5.1% and age 18–30: 62.4 ± 6.4%). Total sleep time was significantly higher as measured by Watch-PAT compared to PSG (428.5 ± 12.8 vs. 374.0 ± 15.0 minutes). Conclusion: While a concordance of 63% can only be deemed moderate, such agreement makes the Watch-PAT a reasonable tool when sleep-staging would be of benefit in clinical and research studies. Support (If Any): The National Sleep Research Institute. Grant # UL1 TR000043 from the National Center for Advancing Translational Sciences (NCATS, National Institutes of Health (NIH) Clinical and Translational Science Award (CTSA) program. This content is only available as a PDF. © Sleep Research Society 2017. Published by Oxford University Press [on behalf of the Sleep Research Society]. All rights reserved. For permissions, please email: journals.permissions@oup.com © Sleep Research Society 2017. Published by Oxford University Press [on behalf of the Sleep Research Society]. All rights reserved. For permissions, please email: journals.permissions@oup.com
TI - 0326 EVALUATION OF THE WATCH-PAT APPARATUS AS A SLEEP-STAGING TOOL
JF - SLEEP
DO - 10.1093/sleepj/zsx050.325
DA - 2017-04-28
UR - https://www.deepdyve.com/lp/oxford-university-press/0326-evaluation-of-the-watch-pat-apparatus-as-a-sleep-staging-tool-XJMlRBCPma
SP - A120
EP - A121
VL - 40
IS - suppl_1
DP - DeepDyve
ER -