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

Physiology of the Heart: The Cardiac Cycle01:18

Physiology of the Heart: The Cardiac Cycle

9.5K
The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
9.5K
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

348
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
348
Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

Cardiac Output I:Effect of Heart Rate on Cardiac Output

2.7K
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
2.7K
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

1.0K
Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
1.0K
Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

1.4K
Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...
1.4K
Anatomy of the Heart01:27

Anatomy of the Heart

119.9K
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
119.9K

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

Comparative long-term prognosis of acute myocardial infarction and acute aortic dissection in a population-based registry.

European heart journal open·2026
Same author

A case of sinus of Valsalva-right ventricle fistula without an aneurysm complicated by aortic regurgitation.

Journal of cardiology cases·2026
Same author

Extended Rivaroxaban Therapy for Cancer-Associated Low-Risk Pulmonary Embolism by Chemotherapy Status: Insights from the ONCO PE Trial.

Thrombosis and haemostasis·2026
Same author

Effect of Empagliflozin on Device-Measured Thoracic Impedance in Patients With Type 2 Diabetes Treated With an Implantable Cardioverter Defibrillator.

Circulation·2026
Same author

Anatomically Normal Aortic Valve Area in Relation to Age, Sex, Body Size, and Aortic Root Dimensions: A TEE Study.

The American journal of cardiology·2026
Same author

External validity and responsiveness of lumbar spinal stenosis-specific symptom and QOL scales: A multicenter prospective study.

Scientific reports·2026

相关实验视频

Updated: Feb 5, 2026

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

11.0K

用心脏风险视图功能进行相位分析,用于心脏再同步治疗:一个病例报告.

Tsuyoshi Ichihara1, Daisuke Tomioka1, Kazumasa Kobashi2

  • 1Department of Cardiology, Shiga University of Medical Science, Otsu, Shiga, Japan.

Journal of cardiology cases
|February 4, 2026
PubMed
概括

心肌 perfusion scintigraphy 有效地诊断出由心脏起器植入造成的左心室失调. 心脏再同步治疗显著改善了这位患者的心脏功能和同步.

关键词:
心脏再同步治疗心脏再同步治疗左心室的机械失调是什么意思单光子发射计算机断层扫描

更多相关视频

Viral Transgene Expression in Rodent Hearts and the Assessment of Cardiac Arrhythmia Risk
05:15

Viral Transgene Expression in Rodent Hearts and the Assessment of Cardiac Arrhythmia Risk

Published on: July 27, 2022

2.1K
Normothermic Ex Situ Heart Perfusion in Working Mode: Assessment of Cardiac Function and Metabolism
09:10

Normothermic Ex Situ Heart Perfusion in Working Mode: Assessment of Cardiac Function and Metabolism

Published on: January 12, 2019

13.8K

相关实验视频

Last Updated: Feb 5, 2026

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

11.0K
Viral Transgene Expression in Rodent Hearts and the Assessment of Cardiac Arrhythmia Risk
05:15

Viral Transgene Expression in Rodent Hearts and the Assessment of Cardiac Arrhythmia Risk

Published on: July 27, 2022

2.1K
Normothermic Ex Situ Heart Perfusion in Working Mode: Assessment of Cardiac Function and Metabolism
09:10

Normothermic Ex Situ Heart Perfusion in Working Mode: Assessment of Cardiac Function and Metabolism

Published on: January 12, 2019

13.8K

科学领域:

  • 心脏病学 心脏病学
  • 核医学就是核医学.
  • 医疗成像医学成像

背景情况:

  • 心肌 perfusion scintigraphy (MPS) 对于诊断稳定性心痛和评估心肌活力至关重要.
  • 左心室 (LV) 不同步可能由心室节奏引起,影响心脏功能.
  • 心力衰竭症状需要评估节奏诱导的机械失调.

研究的目的:

  • 为了说明MPS在识别和评估LV异步症中的诊断作用.
  • 评估心脏再同步疗法 (CRT) 在管理节奏诱导的失同期中的有效性.
  • 突出重复评估在心脏起器植入后喷射率下降的患者的重要性.

主要方法:

  • 病例报告详细介绍了一名因心房静脉阻塞而心力衰竭的患者,需要植入心脏起器.
  • 使用心脏风险视图软件用于MPS的相位分析,以评估LV异步和射出分数 (EF).
  • 比较CRT植入前后的参数,包括EF,标准偏差宽度 (PhSD) 和组图带宽 (PhBW).

主要成果:

  • 在CRT植入前,EF降低 (30%) 和显著的LV异步 (PhSD:86°,PhBW:227°).
  • 在CRT植入后,EF (42%) 和LV同步 (PhSD: 30°,PhBW: 110°) 显著改善.
  • MPS有效地识别了节奏诱导的失调和对CRT的治疗反应.

结论:

  • 心室隔膜节奏可以诱导显著的左心室失调和心力衰竭.
  • MPS是诊断节奏诱导失调和监测CRT疗效的宝贵工具.
  • 在心脏功能下降的起器患者中,定期重新评估机械失调是至关重要的.