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相关概念视频

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.6K
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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Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
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相关实验视频

Updated: Jul 2, 2025

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
06:34

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography

Published on: October 28, 2020

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左心室喷射分数:临床,病理生理和技术限制.

Federico Vancheri1, Giovanni Longo2, Michael Y Henein3

  • 1Department of Internal Medicine, S.Elia Hospital, Caltanissetta, Italy.

Frontiers in cardiovascular medicine
|February 22, 2024
PubMed
概括
此摘要是机器生成的。

左心室喷射分数 (LVEF) 被广泛使用,但在评估心脏功能方面存在局限性. 本综述探讨了LVEF的使用情况.

关键词:
一大动脉的反大动脉狭窄症是什么超声心电图 (Echocardiography) 是一种心声回声仪.可植入式心脏转换器除器左心室喷射分数的部分.额头肌反的情况

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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
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Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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相关实验视频

Last Updated: Jul 2, 2025

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
06:34

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography

Published on: October 28, 2020

3.9K
Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
07:11

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Published on: October 28, 2020

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Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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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.
  • 心血管生理学心血管生理学

背景情况:

  • 左心室喷射分数 (LVEF) 是心血管指南的基石,用于心力衰竭 (HF) 的风险分层和治疗决策.
  • 目前的指导方针严重依赖LVEF进行关键选择,如门更换时间和植入式心脏转换器-除器选择.
  • 然而,LVEF是一个由负载条件,几何形状和图像质量所影响的整体指标,导致显著的变化.

研究的目的:

  • 批判性地分析LVEF在心血管疾病中的临床,病理生理和技术限制.
  • 为了突出 LVEF 如何可能不准确地反映心肌收缩功能,尽管它被广泛使用.
  • 讨论LVEF变化的影响和指导患者管理的局限性.

主要方法:

  • 本综述综合了关于LVEF的现有文献.
  • 它检查了LVEF测量的病理生理基础及其决定因素.
  • 分析了影响LVEF准确性的临床和技术因素.

主要成果:

  • LVEF反映了整体腔体积变化,而不是直接的心肌收缩,即使肌纤维功能受损也可能是正常的.
  • 微妙的心肌缺血可能会被其他心肌纤维层的补偿机制掩盖,从而保持LVEF.
  • 心力衰竭的动态性和干预结果可以改变LVEF,影响其治疗指导的可靠性.

结论:

  • LVEF具有固有的局限性,挑战其作为关键心血管决策的唯一决定因素的作用.
  • 了解这些局限性对于准确的患者评估和心血管病理中的有效治疗策略至关重要.
  • 可能需要替代或补充方法来更好地评估心功能,并指导复杂心血管疾病的管理.