相关实验视频

Updated: Jun 13, 2025

Brain Death Induction in Mice Using Intra-Arterial Blood Pressure Monitoring and Ventilation via Tracheostomy

Brain Death Induction in Mice Using Intra-Arterial Blood Pressure Monitoring and Ventilation via Tracheostomy

Published on: April 17, 2020

在停止维持生命措施后,大脑和全身循环停止之间的关系

Matthew Kolisnyk¹, Teneille E Gofton², Loretta Norton³

¹Graduate Program in Neuroscience, Schulich School of Medicine and Dentistry, Western University, London, Canada; Western Institute for Neuroscience, Western University, London, Canada.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

|June 11, 2025

概括

在循环死亡 (DCD) 后的捐赠中,大脑血液流动在循环停止之前或随着循环停止而停止. 这些经验数据支持当前的死亡确定指南,并增强对器官捐献协议的信任.

科学领域:

医学研究医学研究
器官捐献科学器官捐献科学
神经科学是一个神经科学.

背景情况:

目前在循环死亡 (DCD) 后的器官捐献协议假设大脑活动和血液流动在循环停止附近停止.
验证这一假设的经验数据有限,影响了捐赠者的安全和公众的信任.

研究的目的:

在DCD患者中实证地研究大脑血流和电活动停止相对于全身循环停止的时间.
提供数据支持当前DDC指南的安全和伦理考虑.

主要方法:

对成人患者进行前性观察性研究,这些患者正在接受受控取消维持生命措施的治疗.
通过动脉管监测全身循环;用跨皮多普勒 (TCD) 评估大脑血流.
在一小部分患者中,使用脑电图 (EEG) 记录的大脑电活动.

主要成果:

大脑血液流动在全身循环之前或与系统循环同时持续停止 (中位数=-179秒).
大脑血流的停止发生在较高的平均动脉压 (中位数 = 30 mmHg) 和脉冲压 (中位数 = 13 mmHg) 时.
大脑的电活动通常在大脑血液流动结束后停止,但在循环停止之前停止.

结论:

研究结果从经验上支持了这样一个假设:在DCD中,大脑停止之前或与循环停止相吻合.
这项研究加强了对当前关于器官捐献的死亡确定指南的信心.
结果加强了公众对器官捐献过程安全性和完整性的信任.

关键词:

这是一个EEGEEGEEGEEGEEG.诺姆热区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域 perfusion 区域死亡死亡死亡死亡死亡死亡在循环死亡后的捐赠.生理学生理学生理学通过骨的多普勒仪.终止维持生命的治疗.

更多相关视频

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

Published on: March 31, 2016

Author Spotlight: Obtaining High-Quality CSF and Blood Samples for Epilepsy Biomarker Discovery

Author Spotlight: Obtaining High-Quality CSF and Blood Samples for Epilepsy Biomarker Discovery

Published on: September 1, 2023

相关概念视频

Stages of General Anesthesia

Stages of General Anesthesia

Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...

CNS Depressants: Alcohol and Nicotine

CNS Depressants: Alcohol and Nicotine

Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...