Unidade de Terapia Intensiva, Hospital de Clínicas, Universidade Federal do Paraná - Curitiba (PR), Brasil.
Instituto Lactec - Instituto de Tecnologia para o Desenvolvimento - Curitiba (PR), Brasil.
Rev Bras Ter Intensiva. 2020 Oct-Dec;32(4):535-541. doi: 10.5935/0103-507X.20200083.
To investigate the viability of the bispectral index in the sleep evaluation of critically ill patients and to quantify the associations of sleep parameters measured by this index with the Richards-Campbell Sleep Questionnaire and environmental noise.
This was a cross-sectional observational study that evaluated critically ill adults with diseases of low or moderate severity. The following were measured: total sleep volume and time, deep sleep volume and time, continuous sleep volume and time, sleep onset latency, and environmental sound pressure level. The subjective perception of sleep was evaluated with the Richards-Campbell Sleep Questionnaire the morning after each night of observation.
Patients had a low total sleep time (234 minutes), a predominance of superficial sleep stages, and little deep sleep (1.7 minutes). The total, deep, and continuous sleep volumes were 3,679, 9.4, and 3,143 (bispectral index units × minutes), respectively. The sleep latency was 94 minutes. The mean score of the Richards-Campbell Sleep Questionnaire was 57.9. Total sleep volume, total sleep time, and continuous sleep volume were weakly correlated with the Richards-Campbell Sleep Questionnaire depth of sleep domain score, overall sleep quality domain score, and total score. Total volume, total time, and continuous volume were moderately correlated with the occurrence of awakenings domain score.
The bispectral index is an instrument with limited viability to monitor the sleep of lucid patients and patients with low to moderate disease severity in the intensive care unit. Patients with higher total sleep volume, total sleep time, and continuous sleep volume had better overall sleep perception.
探讨双频谱指数（bispectral index，BIS）在重症患者睡眠评估中的可行性，并定量分析该指数测量的睡眠参数与 Richards-Campbell 睡眠问卷（Richards-Campbell Sleep Questionnaire，RSQ）和环境噪声之间的相关性。
这是一项横断面观察性研究，评估了患有低或中度严重疾病的重症成年患者。测量了以下参数：总睡眠时间和总睡眠量、深度睡眠时间和深度睡眠量、连续睡眠时间和连续睡眠时间、睡眠潜伏期和环境声压级。观察每夜后次日清晨，使用 Richards-Campbell 睡眠问卷评估主观睡眠感知。
患者的总睡眠时间较短（234 分钟），以浅睡眠期为主，深度睡眠时间较少（1.7 分钟）。总睡眠量、深度睡眠量和连续睡眠时间分别为 3679、9.4 和 3143（BIS 单位×分钟）。睡眠潜伏期为 94 分钟。Richards-Campbell 睡眠问卷的平均得分为 57.9。总睡眠时间、总睡眠时间和连续睡眠时间与 Richards-Campbell 睡眠问卷的深度睡眠域评分、整体睡眠质量域评分和总评分呈弱相关。总睡眠时间、总睡眠时间和连续睡眠时间与觉醒域评分中度相关。
BIS 是一种监测清醒患者和重症监护病房中低至中度疾病严重程度患者睡眠的仪器，但其可行性有限。总睡眠时间、总睡眠时间和连续睡眠时间较高的患者整体睡眠感知较好。
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