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相关概念视频

Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...

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相关实验视频

Updated: Jun 23, 2026

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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用于血液动力学测试的解剖学形状的中枢.

Ahmed Darwish1,2, Chloé Papolla3,4, Régis Rieu4

  • 1Laboratory of Cardiovascular Fluid Dynamics, Concordia University, Montreal, QC, H3G 1M8, Canada. lcfd@encs.concordia.ca.

Cardiovascular engineering and technology
|January 16, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种基于水凝的新型心肌膜,用于体外左心仿真. 这种先进的门准确地复制了原生心脏流体动力学和心房流动模式.

关键词:
在体外 (in vitro) 的情况下.左心房是左心房的位置.左心室是左心室中的一个.伴手回是什么意思 伴手回是什么意思中心门的中心门.中心门的脱落是什么意思?循环循环循环循环循环循环循环循环循环

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Biaxial Mechanical Characterizations of Atrioventricular Heart Valves
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相关实验视频

Last Updated: Jun 23, 2026

Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice

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Biaxial Mechanical Characterizations of Atrioventricular Heart Valves
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科学领域:

  • 生物医学工程 生物医学工程
  • 心血管研究研究心血管研究
  • 流体动力学 流体动力学

背景情况:

  • 准确的体外左心模型需要复制复杂的生理流体动力学.
  • mitra 门的复杂装置对精确的模拟提出了挑战.
  • 现有的模型往往缺乏对中枢装置的完整表示.

研究的目的:

  • 开发和测试以水凝为基础的关,用于增强左心模拟.
  • 准确地建模中枢装置及其对心脏流体动态的影响.
  • 为了验证门在复制本土心脏流动模式方面的性能.

主要方法:

  • 利用定制的模拟循环循环来模拟左心脏.
  • 采用粒子图像速度计用于左心室和心室的详细流量分析.
  • 在模拟的循环系统中集成了一种基于水凝的新型 mitra 门.

主要成果:

  • 水凝中枢成功复制了原生腹腔间和心房流动模式.
  • 在整个心脏周期中证明了流体动态的准确模拟.
  • 达到了5.2的心室旋形成时间和0.9m/s (e-wave) 和0.4m/s (a-wave) 的峰值速度.

结论:

  • 开发的水凝中枢提供了一个更完整的表现中枢装置.
  • 这项创新提升了体外左心模型的能力.
  • 这项研究验证了门在复制生理流动动力学方面的有效性.