相关实验视频

Updated: Jun 23, 2026

High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart

High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart

Published on: July 9, 2010

对MitraClip对左心室流动动力学的影响的实验调查

Kowsar Teimouri¹, Ahmed Darwish^2,3, Wael Saleh²

¹Laboratory of Cardiovascular Fluid Dynamics, Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, QC, Canada. kowsar.teimouri@concordia.ca.

Annals of biomedical engineering

|May 5, 2025

概括

该MitraClip设备改善血液流动动力学在左心室的患者与二手管吐. 虽然它不能完全恢复健康的流动,但与吐相比,它显著减少了有害的能量消耗和剪切应力.

科学领域:

心血管生理学心血管生理学
生物医学工程生物医学工程
医疗器械技术医疗器械技术

背景情况:

由于左心室血液动力学发生变化,对心心腔吐有很大的风险.
MitraClip 装置是对 mitrale 吐的关键干预措施,但它对流动动力学的影响需要详细研究.
了解MitraClip植入的血液动力学后果对于患者的治疗结果至关重要.

研究的目的:

实验性地研究MitraClip装置对左心室流动力学的影响.
分析双脉冲喷射对血液动力学参数的影响,这是MitraClip修复的结果.
量化MitraClip后左心室内粘性能量消散和剪切应力积累的变化.

主要方法:

使用定制的左心脉复制器模拟了三种心交门状态:健康,吐和MitraClip修复.
采用时间分辨率粒子图像速度计来可视化和分析各种平面中的流场.
专注于量化流体结构,粘性能量消散和剪切应力积累.

主要成果:

与健康的门相比,中枢回显著增加了峰值速度 (45%),能量消耗和剪切应力.
与回状态相比,MitraClip修复减少了能量消耗 (25-36%) 和剪切应力,尽管产生了双脉冲喷射.
使用MitraClip的血液动力学改善并没有完全复制健康的中枢的条件.

结论:

该MitraClip设备有效地减轻了 mitra反的不良血液动力学影响.
它恢复了关键参数接近健康水平,证明了其治疗潜力.
对优化MitraClip对心室血动力学影响的进一步研究是有必要的.

关键词:

流体动力学流体动力学左心室是左心室中的一个.这就是MitraClip的意义.伴手回是什么意思伴手回是什么意思粒子图像速度测量粒子图像速度测量

更多相关视频

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery

Published on: November 28, 2018

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair

Published on: October 16, 2021

相关概念视频

Mitral Regurgitation I: Introduction

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 Stenosis I: Introduction

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 Tests

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...