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相关概念视频

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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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...
1.2K
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
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Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

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Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
651
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

1.7K
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...
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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
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在心力衰竭中右心室功能与保存的喷射分数:一个基于社区的研究.

Selma F Mohammed1, Imad Hussain2, Omar F AbouEzzeddine

  • 1From the Division of Cardiovascular Diseases (S.F.M., I.H., O.F.A.E., H.T., S.H.K., V.L.R., M.M.R.), Mayo Graduate School (S.F.M.), and Department of Health Sciences Research (V.L.R.), Mayo Clinic, Rochester, MN; and Division of Cardiovascular Medicine, Temple University, Philadelphia, PA (P.F.). mohammed.selma@mayo.edu.

Circulation
|November 14, 2014
PubMed
概括

右心室缩功能障碍 (RVD) 在心力衰竭中很常见,其中包括保留喷射小部分 (HFpEF) 患者,并且预测了更糟糕的结果,包括更高的死亡率和住院率. 这一发现强调了RVD在HFpEF管理中的临床意义.

关键词:
腹痛 腹痛 腹痛 腹痛 腹痛 腹痛 腹痛 腹痛 腹痛心脏衰竭是因为心脏衰竭.高血压,肺部高血压,肺部高血压.右心室功能障碍,右心室功能障碍

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Comprehensive Echocardiographic Assessment of Right Ventricle Function in a Rat Model of Pulmonary Arterial Hypertension
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Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
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Comprehensive Echocardiographic Assessment of Right Ventricle Function in a Rat Model of Pulmonary Arterial Hypertension
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Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
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Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

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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.
  • 心脏衰竭研究研究

背景情况:

  • 右心室缩功能障碍 (RVD) 的患病率和心力衰竭与保留喷射分数 (HFpEF) 的意义仍然不清楚.
  • 高高压pEF影响了大量患者群体,因此需要更好地了解导致因素和预后指标.

研究的目的:

  • 在基于社区的HFpEF队列中描述RVD的患病率和临床意义.
  • 确定RVD与临床特征,心声学发现和患者结局的关联.

主要方法:

  • 预期识别562名符合弗雷明汉标准的高高度皮质突患者 (排泄分数≥50%).
  • 在诊断和随访时进行心声回声,以评估RV功能,使用三状环状平面缩外流和半定量二维评估.
  • 分析因特定原因死亡率和HF住院率,根据相关共变量进行调整.

主要成果:

  • 在相当大比例的高高压脑动症患者中发现了RVD,通常与心房动,心脏起器和利尿剂使用有关.
  • 患有RVD的患者表现出左下心室喷射分数,更严重的透析功能障碍,更低的血压,更高的肺动脉静脉压,以及更严重的RV扩大和三回.
  • RVD独立地预测了较高的全因和心血管死亡率,以及不论使用的定义 (半定量或三环状平面缩外流) 如何,都增加了HF住院率.

结论:

  • 右心室缩功能障碍是社区HFpEF患者经常发现的发现.
  • RVD与更先进的高频特征有关,预示着更差的预后.
  • 评估RV功能对于风险分层和HFpEF管理至关重要.