相关实验视频

Updated: Jun 12, 2025

Establishment of Deep Hypothermic Circulatory Arrest in Rats

Establishment of Deep Hypothermic Circulatory Arrest in Rats

Published on: December 16, 2022

神经认知功能障碍经过短时间 (<20分钟) 持续时间低温循环停止

G Chad Hughes¹, Edward P Chen¹, Jeffrey N Browndyke²

¹Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina.

The Annals of thoracic surgery

|September 25, 2024

概括

即使是短时间的低温循环停止 (HCA) 也会导致大约40%的患者出现认知缺陷. 额叶功能连接与HCA持续时间有关,这表明这个大脑区域对手术敏感.

科学领域:

心血管外科心血管外科
神经科学是一个神经科学.
医疗成像医学成像

背景情况:

临床结果研究表明,安全的低温循环停止 (HCA) 持续时间为25-30分钟.
这种信念缺乏使用先进的神经成像和神经认知评估的系统调查.

研究的目的:

调查与短HCA持续时间 (<20分钟) 相关的神经认知和MRI缺陷.
探索HCA持续时间和大脑功能连接之间的关系.

主要方法:

GOT ICE随机试验的探索性子研究.
评估的神经认知缺陷 (≥1个认知领域≥1个SD下降) 和功能性MRI变化.
在大动脉门手术期间比较深度和中度低温.

主要成果:

大约40%的HCA<20分钟的患者在术后4周表现出认知缺陷.
认知缺陷发生在深度,低中度和高中度低温症组中.
短暂的HCA持续时间 (8-17分钟) 与右额叶功能连接相反相关.

结论:

短暂的HCA持续时间 (<20分钟) 在~40%的患者中导致显著的认知缺陷.
额叶功能连接对HCA持续时间敏感,表明潜在的脆弱性.
外科医生必须认识到,短暂的HCA在大动脉门手术期间可能无法确保完整的神经保护.

更多相关视频

In vitro Assessment of Myocardial Protection following Hypothermia-Preconditioning in a Human Cardiac Myocytes Model

In vitro Assessment of Myocardial Protection following Hypothermia-Preconditioning in a Human Cardiac Myocytes Model

Published on: October 27, 2020

Short-Duration Hypothermia Induction in Rats using Models for Studies examining Clinical Relevance and Mechanisms

Short-Duration Hypothermia Induction in Rats using Models for Studies examining Clinical Relevance and Mechanisms

Published on: March 3, 2021

相关概念视频

Decreased Body Temperature

Decreased Body Temperature

A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...

Cardiopulmonary Resuscitation IV: Pharmacological Management

Cardiopulmonary Resuscitation IV: Pharmacological Management

Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...