Study objective: To validate the Vibe actigraph in assessing sleep-wake patterns compared to polysomnography (PSG) in patients with COPD. Methods: Nine stable COPD patients wore actigraphs while undergoing PSG. The correlation between total sleep time (TST), total sleep period (TSP), sleep onset latency (SOL), wake after sleep onset (WASO), and sleep efficiency was determined for corresponding measurements from the actigraph and PSG. Sensitivity, specificity, and positive and negative predictive values were calculated for the actigraph, considering PSG the gold standard. Levels of agreement between the variables of PSG and the actigraph were estimated using Bland-Altman plots. Results: A strong and statistically significant correlation was noted between PSG and the actigraph in detecting movement during sleep [mean activity score (counts)], TST and TSP (all rs = 0.83; p = 0.005). The median agreement of sleep and wake counts between PSG and the actigraph was 73% and the Cohen’s Kappa value was 0.66. The medians of sensitivity and specificity of the actigraph for detecting sleep versus PSG were 84 and 66%, respectively. The median positive and negative predictive values of the actigraph were 74 and 72%, respectively. Conclusions: This study demonstrated that, under controlled laboratory conditions, the Vibe actigraph in its default settings is a promising tool for the detection of sleep-wake parameters in a small number of ambulatory patients with COPD. Clinical Impact: The actigraph used in this pilot study suggests that these devices could provide clinically relevant information in COPD to better understand the relationship between sleep and health in this population.

中文翻译：

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慢性阻塞性肺疾病患者 Vibe 活动记录仪的评估：一项初步研究

研究目标：与 COPD 患者的多导睡眠图 (PSG) 相比，验证 Vibe 活动记录仪在评估睡眠-觉醒模式方面的作用。方法：9 名稳定的 COPD 患者在接受 PSG 时佩戴活动记录仪。总睡眠时间 (TST)、总睡眠时间 (TSP)、睡眠开始潜伏期 (SOL)、睡眠开始后醒来 (WASO) 和睡眠效率之间的相关性由活动图和 PSG 的相应测量值确定。考虑到 PSG 是金标准，计算了活动记录仪的敏感性、特异性以及阳性和阴性预测值。使用 Bland-Altman 图估计 PSG 变量和活动记录仪之间的一致性水平。结果：在检测睡眠期间的运动 [平均活动评分（计数）] 方面，PSG 与活动记录仪之间存在强烈且具有统计学意义的相关性，TST 和 TSP（所有 rs = 0.83；p = 0.005）。PSG 和活动记录仪之间睡眠和觉醒计数的中位数一致性为 73%，Cohen's Kappa 值为 0.66。检测睡眠与 PSG 的活动记录仪的灵敏度和特异性中位数分别为 84% 和 66%。活动记录仪的中位阳性和阴性预测值分别为 74% 和 72%。结论：本研究表明，在受控实验室条件下，默认设置下的 Vibe 活动记录仪是检测少数非卧床 COPD 患者睡眠-觉醒参数的有前途的工具。临床影响：这项试点研究中使用的活动记录仪表明，这些设备可以提供 COPD 的临床相关信息，以更好地了解该人群的睡眠与健康之间的关系。