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相关概念视频

Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral Stenosis II: Clinical features and Diagnostic Tests

26
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...
26
Mitral Valve Prolapse II: Assessment and Management01:22

Mitral Valve Prolapse II: Assessment and Management

25
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
25
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

20
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...
20
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

23
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...
23
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

19
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...
19
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

14
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
14

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相关实验视频

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A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
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基于图像的戒指大小预测,用于中枢维修.

Serdar Akansel1,2, Markus Kofler1,2,3, Karel M Van Praet1,2,3

  • 1Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charite (DHZC), Berlin, Germany.

European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery
|May 26, 2023
PubMed
概括

准确的结婚整形环大小对于关修复 (MVr) 是至关重要的. 三维 mitra (3D-MV) 重建模型,特别是 commissural 宽度和三角间距离,有效地预测戒指大小,改善手术结果.

关键词:
基于图像的戒指大小测量中心门维修 - - 中心门维修戒指取消了整形手术.预测戒指大小的预测戒指大小测量 戒指大小测量

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科学领域:

  • 心血管外科心血管外科
  • 医疗成像医学成像
  • 生物医学工程 生物医学工程

背景情况:

  • 瘤整形环在关修复 (MVr) 中是标准的.
  • 精确的取消整形环大小对于成功的MVR结果至关重要.
  • 目前的戒指尺寸方法可能具有挑战性,并且严重依赖于外科医生的经验.

研究的目的:

  • 评估三维中 (3D-MV) 重建模型在预测 MVr. 适合的结婚整形环大小的有效性.
  • 确定与最佳环形尺寸选择相关的关键3D-MV几何参数.

主要方法:

  • 分析了150名接受微创性MVr治疗的患者队列,这些患者患有卡潘蒂耶II型病理.
  • 半自动化4D MV分析软件被用于创建3D-MV重建模型和量化中枢的几何形状.
  • 进行了单变量和多变量线性回归分析,以将3D-MV测量与植入环尺寸相关联.

主要成果:

  • 圆圈宽度 (CW) 和三角间距离 (ITD) 与植入的戒指大小的相关性最高 (分别为r=0.839和r=0.796).
  • 在多变量分析中,CW和ITD是结婚整形手术环大小的独立预测因素 (R2=0.743).
  • 使用CW和ITD,76.6%的患者获得了预测值的一个尺寸内的戒指大小.

结论:

  • 三维中枢重建模型为手术决策提供了有价值的支持,用于取消整形手术的戒指大小.
  • 这项研究代表了向开发先进的,潜在的基于机器学习的,用于准确预测结婚整形手术戒指大小的系统的基本步骤.