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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

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 muscle...
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
Dysrhythmias I: Introduction01:15

Dysrhythmias I: Introduction

Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

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 of...

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Related Experiment Video

Updated: Jun 16, 2026

Translational Rabbit Model of Chronic Cardiac Pacing
06:14

Translational Rabbit Model of Chronic Cardiac Pacing

Published on: January 6, 2023

In the wireless era: leadless pacing.

Kathy L Lee1

  • 1Department of Medicine, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong SAR, China. klflee@hku.hk

Expert Review of Cardiovascular Therapy
|February 9, 2010
PubMed
Summary
This summary is machine-generated.

Leadless cardiac pacing using ultrasound energy offers a promising alternative to traditional pacemakers, potentially eliminating lead complications. This innovative approach aims to improve device durability and optimize myocardial stimulation sites for better patient outcomes.

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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
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Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing

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Related Experiment Videos

Last Updated: Jun 16, 2026

Translational Rabbit Model of Chronic Cardiac Pacing
06:14

Translational Rabbit Model of Chronic Cardiac Pacing

Published on: January 6, 2023

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

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Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
07:13

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing

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Area of Science:

  • Cardiovascular medicine
  • Biomedical engineering
  • Medical device technology

Background:

  • Cardiac pacemakers are standard for bradyarrhythmias.
  • Pacing leads, while essential, cause significant device complications.
  • Improving lead durability and stimulation site optimization are key challenges.

Purpose of the Study:

  • To explore leadless cardiac pacing as a solution to lead-related complications.
  • To investigate ultrasound-mediated energy transfer for cardiac pacing.
  • To assess the feasibility of leadless pacing for improved myocardial stimulation.

Main Methods:

  • Review of existing literature on cardiac pacing and lead complications.
  • Examination of studies demonstrating ultrasound-mediated energy transfer in animal and human models.
  • Analysis of the potential benefits and challenges of leadless pacing technology.

Main Results:

  • Pacing leads are a primary source of acute and chronic pacemaker complications.
  • Eliminating the pacing lead is crucial for avoiding complications and enhancing stimulation site selection.
  • Acute studies in animals and humans show promise for ultrasound-mediated leadless pacing.

Conclusions:

  • Leadless cardiac pacing, particularly with ultrasound energy, represents a significant advancement.
  • This technology has the potential to overcome the limitations of transvenous leads.
  • Further development and industry collaboration could make leadless pacing a clinical reality.