连续肺栓塞的立即心肺反应:一个随机的,受控的实验研究
Mads Dam Lyhne1,2, Jacob Gammelgaard Schultz3,4, Christian Schmidt Mortensen3
1Department of Clinical Medicine, Aarhus University, Palle Juul Jensens Boulevard 82, Aarhus N, 8200, Denmark. mads.dam@clin.au.dk.
BMC pulmonary medicine
|May 14, 2024
概括
急性肺栓塞 (PE) 导致肺压力立即增加. 然而,右心室 (RV) 后负荷升高和功能障碍在第三次PE后出现,通风变化与凝血负担直接相关.
科学领域:
- 心脏病学 心脏病学
- 肺部病理学 肺部病理学
- 生理学 生理学 生理学
背景情况:
- 急性肺栓塞 (PE) 造成右心室 (RV) 衰竭的重大风险,原因是肺压力增加和后负载.
- 了解连续PE发作的立即心肺反应对于及时干预至关重要.
- 在猪模型中研究这些反应为人类病理生理学提供了洞察力.
研究的目的:
- 为了确定对连续性肺栓塞 (PE) 事件的即时心肺反应.
- 为了区分肺高血压的发作与右心室 (RV) 功能障碍,以应对增加的凝块负担.
主要方法:
- 一个随机的,受控的,盲目的研究,涉及12头猪,经历了连续的肺栓塞 (PE) 或假冒手术.
- 在每次PE后进行心肺评估,包括压力-体积环和血液气体分析.
- 使用ANOVA和混合模型方法的统计分析被用于评估数据.
主要成果:
- 第一次PE后肺压力显著增加,随后的发作中增加的幅度逐渐减少.
- 在第三次PE后,右心室 (RV) 动脉弹性和肺血管阻力上升,表明延迟后负载升高.
- RV扩张发生在早期,但RV射出分数下降,RV合在第三次PE后下降趋势,表明功能障碍.
结论:
- 右心室 (RV) 后负荷升高和功能障碍在第三次PE后显现,而不是第一次PE后立即出现.
- 肺压升高发生在RV后负载增加和连续PE功能障碍之前.
- 与RV参数相比,通风变量与增加的凝块负担有更直接的关系.
相关概念视频
01:29Pulmonary Embolism I: Introduction
1.5K
Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
1.5K
01:29Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
749
Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
749
01:27Pulmonary Embolism III: Nursing Management
756
A pulmonary embolism occurs when a thrombus, amniotic fluid, tumor tissue, fat, or air embolus blocks one or more pulmonary arteries. Effective nursing management and patient education are crucial for improving outcomes and preventing recurrence.Nursing management starts with obtaining a comprehensive patient history, particularly noting any history of deep vein thrombosis (DVT). Assess for clinical manifestations, including dyspnea, chest pain, crackles, heart murmurs, and signs of right-sided...
756
01:19Pulmonary Embolism I: Introduction
39
A blood clot, or thrombus, is a semi-solid mass composed of fibrin, platelets, and red blood cells. When it forms within a vessel, it can obstruct blood flow, known as thrombosis. If part of the clot detaches, it becomes an embolus that can travel and block distant vessels. When this occurs in the pulmonary arteries, it causes a condition known as pulmonary embolism (PE).Origin and ImpactMost often, the embolus originates from a thrombus in the deep veins of the lower limbs, a condition called...
39