相关实验视频
Updated: Jan 9, 2026

06:41
Veno-Venous Extracorporeal Membrane Oxygenation in a Mouse
Published on: October 24, 2018
12.9K
从机械通风启动到COVID-19中毒性体外膜氧化的时间:一个前性的多中心观察性研究
Akram M Zaaqoq1, Ahmed Labib Shehatta2,3, Nicole M White4,5
1Division of Critical Care, Department of Anaesthesiology, University of Virginia, Charlottesville, VA, USA.
Perfusion
|December 3, 2025
概括
在COVID-19患者的毒性体外膜氧化 (VV ECMO) 之前,侵入性机械通风 (IMV) 的持续时间与ICU死亡率的增加有关. 延迟VV ECMO启动超过IMV的同一天,与较高的死亡风险有关.
科学领域:
- 关键护理医学 关键护理医学
- 肺部病理学 肺部病理学
- 传染性疾病 传染性疾病
背景情况:
- 在严重的COVID-19中,在侵入性机械通风 (IMV) 后启动毒性体外膜氧化 (VV ECMO) 的最佳时间尚未确定.
- 了解这种关系对于改善重症监护机构患者的治疗结果至关重要.
研究的目的:
- 调查VV ECMO启动前IMV持续时间与COVID-19患者的重症监护室 (ICU) 死亡率之间的关联.
- 为了确定延迟VV ECMO是否会影响生存率.
主要方法:
- 分析了919名患有严重COVID-19的成年患者的数据,需要IMV和VV ECMO.
- 利用多变量考克斯回归模型来评估IMV持续时间对ICU死亡率的影响.
- 根据日历日期和关键患者共变量进行调整.
主要成果:
- 在ICU,同日IMV/VVECMO的死亡率为43%,1-7天的死亡率为47%,8+天的死亡率为54%.
- IMV持续时间较长的患者获得了更为密集的支持,包括倾斜定位和血管压缩器.
- 多变量分析显示,随着VV ECMO启动的延迟,死亡风险增加 (HR 1.37为1-7天,HR 1.51为8天以上).
结论:
- 在VV ECMO前的IMV持续时间和COVID-19患者的ICU死亡率之间存在积极的关联.
- 虽然注意到了这种关联,但经过对共变量进行调整后,效应大小显示不确定性.
- 需要进一步的研究来证实这些发现并建立最终的临床指导方针.
相关概念视频
Mechanical Ventilation III: Noninvasive Ventilation
485
Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation...
Noninvasive Positive-Pressure Ventilation...
485
Mechanical Ventilation II: Invasive Ventilation
597
Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
597
Mechanical Ventilation I: Indication and Settings
2.5K
Mechanical ventilation is a life-saving technique for managing acute respiratory failure and other respiratory complications. The process involves using a machine known as a ventilator to supply oxygen to the lungs and assist in removing carbon dioxide. It serves as a bridge to long-term mechanical ventilation or a temporary measure until ventilatory support is discontinued. The ventilator can maintain this function for a prolonged period, providing critical support for patients until they can...
2.5K
Acute Respiratory Failure-II
988
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
988
Acute Respiratory Failure-V
425
The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Ensure that patients are monitored continuously for their response to therapy, including changes in...
425
Acute Respiratory Failure-I
797
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
797

