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
Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

922
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
922
Heart Valves01:16

Heart Valves

4.4K
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...
4.4K
Cardiovascular System Abnormal Findings II: Auscultation01:25

Cardiovascular System Abnormal Findings II: Auscultation

114
Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
114
Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

903
Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
903
Cardiac Cycle01:29

Cardiac Cycle

4.7K
The cardiac cycle refers to the sequence of events that occur in the heart from the beginning of one heartbeat to the next. It's characterized by alternating periods of contraction (systole) and relaxation (diastole) of the heart muscles.
During the cardiac cycle, blood flow through the heart is regulated entirely by changing pressure gradients. This sequence of events begins with the heart in a state of total relaxation, known as mid-to-late diastole, during which blood passively flows from...
4.7K

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

When the LBBB Does Not Prolong the Tachycardia Cycle Length in Left-Sided AVRT.

JACC. Clinical electrophysiology·2026
Same author

Outcomes comparison between catheter ablation of ventricular tachycardia in Chagas disease versus ischemic and dilated cardiomyopathy - a retrospective cohort study.

Lancet regional health. Americas·2026
Same author

Wide QRS tachycardia following atrial flutter: what is the mechanism?

Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing·2026
Same author

Pathological findings of stereotactic cardiac radiotherapy for the treatment of ventricular tachycardia in patients with Chagas disease: case series.

European heart journal. Case reports·2026
Same author

Reduced Regional Brain Metabolism in Stroke-Free Atrial Fibrillation Patients: Insights From a Pilot FDG-PET Study.

JACC. Clinical electrophysiology·2026
Same author

Feasibility of endocardial left bundle branch pacing in a 3-month-old with complete congenital atrioventricular heart block: A case report.

HeartRhythm case reports·2025
Same journal

A Case of Permanent Pacemaker Implantation via the Epicardial Approach Using the 3830 Lead in an 11-Day-Old Neonate (With Follow-Up of the Above Case).

Pacing and clinical electrophysiology : PACE·2026
Same journal

Cryoballoon Versus Radiofrequency Ablation for Persistent Atrial Fibrillation: Meta-Analysis of Randomized Trials.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Tilt Test Duration in Suspected Vasovagal Syncope: Temporal Patterns and Diagnostic Yield in Patients From Central China.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Combined Leadless Pacing and Subcutaneous ICD Therapy in Long QT Syndromes.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Association of Anesthesia Modality With Procedural Parameters and Clinical Outcomes in PVI for Atrial Fibrillation.

Pacing and clinical electrophysiology : PACE·2026
Same journal

Zero-Fluoroscopy Cryoballoon Ablation for Paroxysmal Atrial Fibrillation in a Patient With Dextrocardia: A Case Report.

Pacing and clinical electrophysiology : PACE·2026
查看所有相关文章

相关实验视频

Updated: Jun 16, 2025

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
12:17

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Published on: May 21, 2017

11.3K

在动脉置换术后发生不律性缩.

Roberto Alvarez Coello1, Muhieddine Omar Chokr1, Rodrigo Melo Kulchetscki1

  • 1Arrhythmia Unit, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil.

Pacing and clinical electrophysiology : PACE
|April 26, 2025
PubMed
概括
此摘要是机器生成的。

一名年轻男子在进行大动脉置换后出现了腹腔动脉短心 (VT). 内动脉气球 (IABP) 的支持对于管理耐火静脉关键,该静脉成功通过右束枝切除进行治疗.

关键词:
剥离 剥离 剥离 剥离大动脉门更换术捆束的分支重新进入的腹腔动脉高心率.扩张性心肌病症 扩张性心肌病症

更多相关视频

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
14:14

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

Published on: December 11, 2017

14.0K
Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
08:42

Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China

Published on: February 11, 2022

3.4K

相关实验视频

Last Updated: Jun 16, 2025

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
12:17

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots

Published on: May 21, 2017

11.3K
Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
14:14

Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement

Published on: December 11, 2017

14.0K
Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
08:42

Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China

Published on: February 11, 2022

3.4K

科学领域:

  • 心脏病学 心脏病学
  • 电子生理学 电子生理学
  • 心脏外科手术 心脏外科手术

背景情况:

  • 严重的大动脉 insufficiency 需要机械假肢更换.
  • 手术后腹腔动心 (VT) 可能是心脏手术后的严重并发症.
  • 耐火性静脉瘤是一个重大的临床挑战,通常需要先进的血液动力学支持.

研究的目的:

  • 在机械大动脉置换后报告一种罕见的捆绑分支复入心室低心率 (BBR-VT) 病例.
  • 突出在术后期耐火性静脉瘤的诊断挑战和管理策略.
  • 为了证明右捆支部切除在治疗BBR-VT方面的有效性.

主要方法:

  • 一个病例报告详细介绍了一个年轻的男性患者,患有严重的大动脉缺陷.
  • 管理涉及机械大动脉假体更换,然后是紧急大动脉内气球 (IABP) 支持耐火静脉动脉.
  • 进行了电生理学研究,随后进行了右束分支 (RBB) 切除.

主要成果:

  • 该患者在手术后一个月出现昏迷和不间断的静脉,进展为心脏性休克.
  • 标准的 VT 管理失败了,但 VT 响应了 IABP 的支持.
  • 电生理学研究没有诱导VT,但机动建议BBR-VT,它被成功消去.

结论:

  • 捆绑分支重入腹腔动心 (BBR-VT) 是大动脉置换后的一种潜在并发症.
  • 内动脉气球 (IABP) 的支持可以在管理血液动力学不稳定的静脉瘤中起到至关重要的作用.
  • 右束枝 (RBB) 切除为BBR-VT提供了有效的治疗方法.