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相关概念视频

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

15
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...
15
Mitral Regurgitation II: Clinical Features and Diagnostic Tests01:23

Mitral Regurgitation II: Clinical Features and Diagnostic Tests

22
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...
22
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

15
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...
15
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

18
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...
18
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

21
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...
21
Mitral Regurgitation IV: Nursing Management01:28

Mitral Regurgitation IV: Nursing Management

40
Mitral regurgitation (MR) is a condition where the mitral valve does not close properly, leading to the backward flow of blood from the left ventricle into the left atrium during systole. This condition can arise from various causes, including rheumatic fever, infective endocarditis, or degenerative valve disease. Effective nursing management is crucial to optimizing patient outcomes and involves comprehensive assessment and targeted interventions.Comprehensive Patient AssessmentA detailed...
40

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相关实验视频

Updated: Jul 11, 2025

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

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主要额叶吐:为了更好地量化左心室后果.

Antoine Neveu1, Samy Aghezzaf2, Emmanuel Oger3

  • 1CHU Rennes, Inserm, LTSI - UMR 1099, University of Rennes, Rennes, France.

Clinical cardiology
|November 10, 2023
PubMed
概括

心肌工作指数,包括全球工作指数和建设性工作,有效预测患有初级心肌吐 (PMR) 患者的临床事件. 运动应激心声学可以提高PMR的预后准确性,有助于早期的外科决定.

关键词:
运动心电回声图 (Echocardiography) 是一种运动心电回声图.左心室的全球纵向应变.心肌功能的工作.主要的 mitra 反.预后 预后 预后

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An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
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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
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相关实验视频

Last Updated: Jul 11, 2025

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
08:31

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

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An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat
07:42

An Image Guided Transapical Mitral Valve Leaflet Puncture Model of Controlled Volume Overload from Mitral Regurgitation in the Rat

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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
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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

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科学领域:

  • 心脏病学 心脏病学
  • 心声回声扫描 (Echocardiography) 是一种心声回声扫描.
  • 心脏机械学 心脏机械学

背景情况:

  • 在无症状患者中,初级腹吐 (PMR) 的管理通常依赖于左心室末缩直径 (LVESD) 和射出分数 (LVEF).
  • LV-心肌工作 (LVMW) 提供了一种新的方法来量化LV功能,利用压力-应变循环.
  • 标准心声回声学参数可能会受到负载条件变化的影响.

研究的目的:

  • 评估 LVMW 对PMR患者临床事件的预测附加值.
  • 确定LVMW是否可以改善无症状严重PMR的风险分层.

主要方法:

  • 103名无症状的重症PMR患者接受了休息和运动压力回声心电图.
  • LV心肌全局工作指数 (GWI),建设性工作 (GCW),浪费工作 (GWW) 和工作效率 (GWE) 用斑点跟踪回声心脏学测量.
  • 随访时间中位数为670天,跟踪临床事件.

主要成果:

  • 临床事件发生在48.5%的患者中,中位数为289天.
  • LVESD和LVEF没有预测事件,而非静脉肺动脉压 (sPAP).
  • 全球纵向应变 (GLS),GWI,GCW和左心室体积指数的变化独立预测了临床事件.

结论:

  • 低剂量运动期间心肌工作指数的变化对于预测PMR患者预后至关重要.
  • 这些指数可以帮助识别早期手术干预的候选人.
  • LVMW提供了宝贵的预后信息,超出了传统的心声回声测量.