FEASIBILITY OF USING A WEARABLE BIOSENSOR DEVICE IN PATIENTS AT RISK FOR ALZHEIMER’S DISEASE DEMENTIA

痴呆 医学 认知 观察研究 认知功能衰退 阿尔茨海默病 神经心理学 物理医学与康复 疾病 物理疗法 内科学 精神科
作者
Nabeel Saif,Paul Yan,Kellyann Niotis,Olivia Scheyer,Aneela Rahman,Murray R. Berkowitz,Robert Krikorian,Hollie Hristov,George Sadek,Sonia Bellara,Richard Isaacson
出处
期刊:JPAD [Springer Science+Business Media]
卷期号:: 1-8 被引量:30
标识
DOI:10.14283/jpad.2019.39
摘要

Alzheimer’s disease (AD) is the most common and most costly chronic neurodegenerative disease globally. AD develops over an extended period prior to cognitive symptoms, leaving a “window of opportunity” for targeted risk-reduction interventions. Further, this pre-dementia phase includes early physiological changes in sleep and autonomic regulation, for which wearable biosensor devices may offer a convenient and cost-effective method to assess AD-risk. Patients with a family history of AD and no or minimal cognitive complaints were recruited from the Alzheimer’s Prevention Clinic at Weill Cornell Medicine & New York-Presbyterian. Of the 40 consecutive patients screened, 34 (85%) agreed to wear a wearable biosensor device (WHOOP). One subject (2.5%) lost the device prior to data collection. Of the remaining subjects, 24 were classified as normal cognition and were asymptomatic, 6 were classified as subjective cognitive decline, and 3 were amyloid-positive (one with pre-clinical AD, one with pre-clinical Lewy-Body Dementia, and one with mild cognitive impairment due to AD). Sleep-cycle, autonomic (heart rate variability [HRV]) and activity measures were collected via WHOOP. Blood biomarkers and neuropsychological testing sensitive to cognitive changes in pre-clinical AD were obtained. Participants completed surveys assessing their sleep-patterns, exercise habits, and attitudes towards WHOOP. The goal of this prospective observational study was to determine the feasibility of using a wrist-worn biosensor device in patients at-risk for AD dementia. Unsupervised machine learning was performed to first separate participants into distinct phenotypic groups using the multivariate biometric data. Additional statistical analyses were conducted to examine correlations between individual biometric measures and cognitive performance. 27 (81.8%) participants completed the follow-up surveys. Twenty-four participants (88.9%) were satisfied with WHOOP after six months, and twenty-three (85.2%) wanted to continue wearing WHOOP. K-means clustering separated participants into two groups. Group 1 was older, had lower HRV, and spent more time in slow-wave sleep (SWS) than Group 2. Group 1 performed better on two cognitive tests assessing executive function: Flanker Inhibitory Attention/Control (FIAC) (p=.031), and Dimensional Change Card Sort (DCCS) (p=.061). In Group 1, DCCS was correlated with SWS (ϱ=.68, p=0.024) and HRV (ϱ=.6, p=0.019). In Group 2, DCCS was correlated with HRV (ϱ=.55, p=0.018). There were no significant differences in blood biomarkers between the two groups. Wearable biosensor devices may be a feasible tool to assess AD-related physiological changes. Longitudinal collection of sleep and HRV data may potentially be a noninvasive method for monitoring cognitive changes related to pre-clinical AD. Further study is warranted in larger populations.
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