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

Pulse rhythm01:30

Pulse rhythm

768
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
768
Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

3
Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
3
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

2.2K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
2.2K
Conduction System of the Heart01:19

Conduction System of the Heart

4.6K
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
4.6K
Applications of RC Circuits01:22

Applications of RC Circuits

3.0K
A relaxation oscillator is one of the applications of RC circuits. A neon lamp relaxation oscillator comprises a capacitor, a resistor, a voltage source, and a lamp. The lamp acts like an open circuit, with infinite resistance until the potential difference across the lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit with zero resistance, and the capacitor discharges through the lamp, thus producing light. Once the capacitor is fully discharged through the...
3.0K

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

Comparison of general anesthesia and deep sedation for complex atrial ablation procedures using a lattice-tip catheter with monopolar pulsed field and radiofrequency ablation.

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

Predictors of pacing-induced cardiomyopathy in patients undergoing AV nodal ablation: insights from a Delphi process and retrospective cohort study.

European heart journal open·2026
Same author

PVI Durability After PFA or RFA in Persistent-AF: Insights From a Mandated Prospective Remapping Study.

JACC. Clinical electrophysiology·2026
Same author

When the Pacemaker Goes Rogue: Pacemaker-Induced Tachycardia, Syncope, and Car Crash.

Case reports in cardiology·2026
Same author

Semaglutide-associated Twiddler syndrome.

JCEM case reports·2026
Same author

Modeling In Vitro Biofilm-Calculus Formation for Assessing Periodontal Instrumentation and the Forces Applied.

Clinical and experimental dental research·2026

相关实验视频

Updated: Jun 9, 2025

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

10.4K

一个响应速度的任务循环协议,用于无心脏起器同步.

Adrian Ryser1,2,3,4, Tobias Reichlin1, Jürgen Burger5

  • 1Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 20, 3010 Bern, BE Switzerland.

Biomedical engineering letters
|October 28, 2024
PubMed
概括
此摘要是机器生成的。

双室无心脏起器 (LLPM) 的新同步协议可以通过优化功耗来延长设备的寿命. 这种速度响应的方法保持了心房 (AV) 同步,同时显著减少了能源使用,可能降低了更换频率.

关键词:
通信协议 通信协议双室心脏起器是什么意思植入物通信 植入物通信无心脏起器是一种无心脏起器.速度响应式的速度响应.第2章 没有了

更多相关视频

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Published on: February 17, 2018

13.5K
Translational Rabbit Model of Chronic Cardiac Pacing
06:14

Translational Rabbit Model of Chronic Cardiac Pacing

Published on: January 6, 2023

2.5K

相关实验视频

Last Updated: Jun 9, 2025

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

10.4K
Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
10:08

Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine

Published on: February 17, 2018

13.5K
Translational Rabbit Model of Chronic Cardiac Pacing
06:14

Translational Rabbit Model of Chronic Cardiac Pacing

Published on: January 6, 2023

2.5K

科学领域:

  • 生物医学工程 生物医学工程
  • 医疗器械 医疗器械
  • 心血管技术的心血管技术

背景情况:

  • 双室无心脏起器 (LLPM) 使用两种植入物来控制心律.
  • 在LLPM中,设备间的通信对心房 (AV) 同步至关重要,但会显著影响电池的寿命,减少35-45%.

研究的目的:

  • 分析一种新的LLPM同步协议的节能潜力.
  • 评估该协议对保持AV同步的影响.
  • 为了优化参数,最大限度地提高功耗和AV同步之间的权衡.

主要方法:

  • 使用系统级模拟来优化用于LLPM同步的新型窗口调度算法.
  • 优化的关键参数包括每个心脏周期的通信窗口数量和窗口更新的平均周期.
  • LLPM模型的传感输入来自人类心电图记录 (MIT-BIH心律失常数据库);使用微芯片测量估计了收发器电流消耗.

主要成果:

  • 优化的协议实现了收发器中位数电流消耗166nA, AV中位数同步率为92.5%.
  • 与优先考虑AV同步的非速率响应方法相比,这导致电流消耗减少18.3%,AV同步减少3.2%.
  • 最大化性能比 (AV同步/电流消耗) 是通过每次心脏周期一个窗口和三个平均周期实现的.

结论:

  • 采用对双室LLPM的速度响应通信协议可以显著提高设备的寿命.
  • 这种方法有效地平衡了功耗和AV同步,可能减少频繁更换设备的需求.
  • 这些发现表明,改善无心脏起器技术的长期性能是一个可行的策略.