Improving the Sleep and Circadian Rhythms of Mechanically Ventilated Patients
2018年5月3日 更新者：Brian Gehlbach
The goal of this project is to determine whether the sleep and circadian rhythms of critically ill patients undergoing mechanical ventilation can be improved through practical strategies that can be employed at the bedside.
研究概览
详细说明
Nearly 1 million patients develop respiratory failure annually in the United States; yet, the sleep of patients undergoing mechanical ventilation has received little attention.
This project is designed to characterize sleep and circadian rhythmicity in critically ill patients and to explore the efficacy of a non-pharmacological intervention to improve sleep and normalize circadian phase.
The study will examine the effect of a protocol employing noise reduction and enforcement of a robust light-dark cycle on sleep quality and circadian rhythmicity.
A secondary analysis will examine the relationship between delirium and sleep disruption and loss of circadian rhythmicity.
Circadian rhythmicity will be characterized through the measurement of urinary 6-sulfatoxymelatonin levels at frequent intervals, while sleep will be assessed using continuous polysomnography.
研究类型
介入性
注册 (实际的)
24
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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Illinois
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Chicago、Illinois、美国、60637
- University Of Chicago Medical Center
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Iowa
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Iowa City、Iowa、美国、52242
- University of Iowa Hospitals and Clinics
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-
参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
18年 及以上 (成人、年长者)
接受健康志愿者
不
有资格学习的性别
全部
描述
Inclusion Criteria:
- Age 18 years or older
- Receiving mechanical ventilation and intravenous sedation
Exclusion Criteria:
- Debilitating central nervous system disease or degenerative disorder
- Active seizures
- Persistent coma
- Renal failure requiring dialysis
- Expected to be extubated within 24 hours
- Currently receiving neuromuscular blocker
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Sleep promotion protocol
Behavioral: 48 hours of sleep and circadian rhythm promotion including timed light exposure.
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This multifaceted intervention attempts to enhance sleep and circadian rhythmicity through improved scheduling of nursing procedures, enforcement of a day/night routine, increased light exposure during the day, and decreased light and sound exposure during the night.
The intervention began the morning after enrollment and enforced a specific period of enhanced light exposure from 9:00 a.m. to noon.
The initial target of 5,000 lux administered by light box (Sunsation, SunBox Co.) was reduced to 400-700 lux after the first 10 subjects were enrolled in the study.
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有源比较器：Usual care
Behavioral: 48 hours of usual care.
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Usual care.
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Circadian Timing
大体时间：Day 1 to Day 3
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The magnitude of the phase change in 6-sulfatoxymelatonin excretion between Day 1 and Day 3 will be compared between the intervention and usual care groups.
This is done by comparing, for each group, the timing of the best-fit maximum on Day 1 with the timing of the best-fit maximum on Day 3. The result is expressed in hours.
A positive value represents a phase advance from Day 1 to Day 3 (e.g. an earlier occurrence of maximum excretion on Day 3 when compared with Day 1), while a negative value represents a phase delay from Day 1 to Day 3 (e.g. a later occurrence of maximum excretion on Day 3 when compared with Day 1).
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Day 1 to Day 3
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Normal Circadian Timing
大体时间：Day 3
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The percentage of subjects who exhibit normal circadian timing of 6-sulfatoxymelatonin excretion on Day 3 will be compared between the intervention and usual care groups.
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Day 3
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Circadian Amplitude
大体时间：Day 3
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The amplitude (e.g. one half the value from peak to trough of the fitted cosine curve) of the circadian rhythm of 6-sulfatoxymelatonin on Day 3 will be compared between the usual care and intervention groups.
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Day 3
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Spectral Edge Frequency 95%
大体时间：Day 2
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The difference between the polysomnographically derived daytime and nocturnal spectral edge frequency 95% parameter will be used as a measure of increased diurnal sleep/wake activity.
This parameter will be compared between the usual care and intervention groups.
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Day 2
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Delirium
大体时间：Day 3
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The percentage of patients who are delirious at the conclusion at the study will be compared between the intervention and usual care groups.
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Day 3
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员：Brian K Gehlbach, MD、University of Iowa
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2011年1月1日
初级完成 (实际的)
2016年12月1日
研究完成 (实际的)
2016年12月1日
研究注册日期
首次提交
2011年1月19日
首先提交符合 QC 标准的
2011年1月25日
首次发布 (估计)
2011年1月26日
研究记录更新
最后更新发布 (实际的)
2018年5月7日
上次提交的符合 QC 标准的更新
2018年5月3日
最后验证
2018年5月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.