转移函数分析指标的测试-复试可靠性,用于评估动态大脑自调节对自发血压振荡的动态大脑自调
Markus Harboe Olsen1, Christian Riberholt1,2, Tenna Capion3
1Department of Neuroanaesthesiology, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
Experimental physiology
|April 9, 2024
概括
五分钟的录音不足以进行大脑自我调节的可靠转移功能分析 (TFA). 需要更长的持续时间,特别是在重症患者中,以确保精确的动态大脑自我调节评估.
科学领域:
- 神经科学是一个神经科学.
- 身体生理学 身体生理学
- 医疗工程 医学工程
背景情况:
- 动态大脑自调节 (DCA) 对于维持稳定的大脑血液流动至关重要.
- 转移函数分析 (TFA) 是使用自发血压振荡评估DCA的常用方法.
- 从短记录中获得的TFA指标的测试-重新测试可靠性尚未得到充分证实.
研究的目的:
- 评估TFA指标的动态大脑自我调节的测试-重新测试可靠性.
- 为了确定可靠的TFA指标的最佳记录时间.
- 为了比较健康个体与患有下大脑下出血或败血症的患者的可靠性.
主要方法:
- 从19名健康志愿者,5分钟的记录中评估了TFA指标 (增益,阶段,连贯性),37名脑下关节下出血患者和19名败血症患者.
- 使用最小实差 (SRD) 和偏差系数评估可靠性.
- 与连续5分钟,分隔5分钟和更长时间 (≥10分钟) 的录音进行了比较.
主要成果:
- 在健康的志愿者和患者中,暂时分离的记录降低了增益的可靠性.
- 延长记录时间并没有提高健康志愿者或脑下关节出血患者的可靠性.
- 败血症患者的相位可靠性随着时间分离而降低;在所有组中,需要更长的记录才能获得稳定的收益.
结论:
- 五分钟的录音不足以提供动态大脑自我调节的可靠TFA指标.
- 更长的记录时间是必要的,特别是在危急病患者 (下关节出血,败血症).
- 优化TFA记录时间对于准确评估大脑自我调节至关重要.
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