Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

1.4K
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...
1.4K
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...
1.6K
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

367
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
367
Heart Valves01:16

Heart Valves

4.6K
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
4.6K
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

337
β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation,...
337

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Off-Label Biliary Stents for Refractory Anastomotic Strictures and Leaks after Esophageal Atresia Repair in Infants.

Endoscopy international open·2026
Same author

Guidelines in Action: Perfusion-Dependent Severe Basilar Artery Stenosis, Blood Pressure Management.

Stroke·2026
Same author

Is routine imaging follow-up after LAA closure necessary?

European heart journal. Cardiovascular Imaging·2025
Same author

Anticoagulation in critically ill patients with new-onset atrial fibrillation: A risk worth taking?

Heart rhythm·2025
Same author

Response by Aronson et al to Letter Regarding Article, "Enhancing Sweat Rate Using a Novel Device for the Treatment of Congestion in Heart Failure".

Circulation. Heart failure·2025
Same author

Left atrial functional impairment as a predictor of atrial fibrillation: insights from cardiac CT.

European radiology·2025

相关实验视频

Updated: Jun 26, 2025

Author Spotlight: Enhancing Graft Viability Assessment Through Quantitative Metrics and Innovative Reservoir Systems
08:49

Author Spotlight: Enhancing Graft Viability Assessment Through Quantitative Metrics and Innovative Reservoir Systems

Published on: August 2, 2024

714

管道流动补偿左心室受损的被动和助推功能在先进的透析功能障碍中.

Doron Aronson1,2, Hend Sliman1, Sobhi Abadi3,2

  • 1Departments of Cardiology (D.A., H.S., D.P., D.M., J.L.), Rambam Health Care Campus, Haifa, Israel.

Circulation. Cardiovascular imaging
|May 8, 2024
PubMed
概括
此摘要是机器生成的。

在晚期的透支功能障碍中,左心房管体积增加补偿了左心室填充量减少. 这种由肺静脉压升高所驱动的补偿机制,对于维持心脏输出至关重要.

关键词:
心房功能的心房功能.管道体积的管道体积.在左心房的左心房.左心室的透静功能障碍阶段性左心房功能 左心房功能

更多相关视频

Functional Assessment of the Donor Heart During Ex Situ Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography
08:21

Functional Assessment of the Donor Heart During Ex Situ Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography

Published on: October 11, 2022

2.1K
Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

10.5K

相关实验视频

Last Updated: Jun 26, 2025

Author Spotlight: Enhancing Graft Viability Assessment Through Quantitative Metrics and Innovative Reservoir Systems
08:49

Author Spotlight: Enhancing Graft Viability Assessment Through Quantitative Metrics and Innovative Reservoir Systems

Published on: August 2, 2024

714
Functional Assessment of the Donor Heart During Ex Situ Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography
08:21

Functional Assessment of the Donor Heart During Ex Situ Perfusion: Insights from Pressure-Volume Loops and Surface Echocardiography

Published on: October 11, 2022

2.1K
Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

10.5K

科学领域:

  • 心脏病学 心脏病学
  • 心脏生理学 心脏生理学
  • 腹腔病理学 腹腔病理学 腹腔病学

背景情况:

  • 量化左心室 (LA) 导管功能及其在左心室 (LV) 填充中的作用是复杂的,需要同时测量LA和LV体积.
  • 动脉管功能与腹功能障碍严重程度之间的确切关系尚未完全理解.
  • 这项研究研究了LA导管功能的补偿作用,以维持在先进的扩张性功能障碍期间的LV填充.

研究的目的:

  • 为了分析LA功能的体积和流量特征,在LV透气功能障碍的整个频谱中.
  • 确定不同LA功能组件 (早期被动排空,主动增压器,导管) 对LV填充的贡献.
  • 为了验证一组患有严重大动脉狭窄症的患者的研究结果.

主要方法:

  • 用多相心脏计算机断层扫描对489名患者进行了LA功能的体积和流量分析.
  • 使用LA和LV时间体积曲线来计算早期被动排空,主动增压器和导管体积.
  • 结果在110名患有严重大动脉狭窄症的患者中得到了前性验证.

主要成果:

  • 早期被动填充随着扩张性功能障碍的恶化而减少.
  • 房增压器的贡献最初增加,但随后下降,无法弥补减少的早期填充.
  • 管道体积逐渐增加,在限制性填充模式下占中风体积的高达75%,从而弥补了早期和助推器功能的减少. 管道体积增加与肺动脉静脉压力升高和中枢E波速度相关.

结论:

  • 增加的LA导管体积作为一个关键的补偿机制,以维持LV填充在先进的扩张功能障碍.
  • 这种补偿是通过增加肺静脉压力来实现的,尽管 LV 透静压力上升.
  • 这些发现突显了导管功能的重要性,在严重的透静功能障碍时保持心脏输出.