时间控制的适应性通风 (TCAV):一个个性化的肺部保护策略
Hassan Al-Khalisy1, Gary F Nieman2, Michaela Kollisch-Singule2
1East Carolina University, Greenville, NC, USA.
Respiratory research
|January 18, 2024
概括
时间控制自适应通风 (TCAV) 为急性呼吸困扰综合征 (ARDS) 患者个性化机械通风. 这种新的方法旨在通过稳定气泡和最大限度地减少肺应变来减少呼吸器诱导的肺损伤 (VILI).
科学领域:
- 关键护理医学 关键护理医学
- 呼吸系统生理学 呼吸系统生理学
- 生物医学工程 生物医学工程
背景情况:
- 由于肺部异质性,急性呼吸困扰综合征 (ARDS) 在机械通风方面存在重大挑战.
- 目前的保护性通风策略,如低潮量 (LVT) 和开放式肺方法 (OLA),在降低ARDS相关死亡率方面存在局限性.
- 重复性气囊缩和膨胀 (RACE) 是导致呼吸机引起的肺损伤 (VILI) 的关键机制.
研究的目的:
- 介绍和描述时间控制自适应通风 (TCAV) 方法,用于应用气道压力释放通风 (APRV) 模式.
- 将TCAV作为一种替代策略,通过解决肺异质性来尽量减少ARDS患者的VILI.
- 突出TCAV在降低ARDS相关发病率和死亡率方面的潜力.
主要方法:
- TCAV使用一个闭环系统来个性化呼气持续时间,潮体积 (VT) 和最终呼气肺体积 (EELV).
- 通过在被动呼气期间通过呼气流动曲线监测呼吸系统合规性的变化 (CRS) 来实现个性化.
- 该方法具有个性化的呼气持续时间,用于膜稳定,以及延长的吸气阶段,用于逐渐重新打开崩的肺组织.
主要成果:
- 通过个性化呼气持续时间,TCAV旨在最大限度地减少膜缩和EELV的渐进性损失.
- 这种策略促进了气泡稳定,减少了肺部单元在呼吸之间崩的时间.
- 在固定的通胀压力下延长的吸气阶段有助于随着时间的推移逐渐重新打开缩的肺部区域.
结论:
- 通过适应患者特定的肺生理学,TCAV为ARDS中机械通风提供了一种新的方法.
- 通过最大限度地减少RACE和优化肺部招募,TCAV有可能显著减少VILI.
- 这种适应性策略可能会导致改善结果,包括减少ARDS患者的发病率和死亡率.
相关概念视频
Ventilatory Modes
157
Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
157
Mechanical Ventilation III: Noninvasive Ventilation
123
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...
123
Physiological Control of Respiration
2.1K
Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
2.1K
Mechanical Ventilation II: Invasive Ventilation
144
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...
144
Mechanical Ventilation I: Indication and Settings
382
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...
382
Acute Respiratory Failure-V
141
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...
141


