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Related Concept Videos

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...
Cardiac Action Potential01:30

Cardiac Action Potential

Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

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...
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...
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 II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

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...

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Related Experiment Video

Updated: Jun 4, 2026

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

[Progress in cardiac pacing].

María-José Sancho-Tello de Carranza1, Francisco Ruiz-Mateas, María Luisa Fidalgo-Andrés

  • 1Hospital Universitario La Fe, Valencia, España.

Revista Espanola De Cardiologia
|February 1, 2011
PubMed
Summary

Recent advancements in cardiac resynchronization therapy and leadless pacing are discussed. The feasibility of MRI scans for patients with cardiac pacemakers is also reviewed.

Area of Science:

  • Cardiology
  • Medical Devices
  • Electrophysiology

Context:

  • Cardiac pacing technology is rapidly evolving.
  • Integrating advanced diagnostics like MRI with implanted cardiac devices presents challenges.
  • The field requires continuous updates on therapeutic innovations and device compatibility.

Purpose:

  • To review recent breakthroughs in cardiac resynchronization therapy (CRT).
  • To assess the safety and feasibility of magnetic resonance imaging (MRI) in pacemaker patients.
  • To outline the present and future landscape of leadless pacing technology.
  • To summarize pivotal scientific publications in cardiac pacing from the past year.

Summary:

  • The article covers the latest developments in cardiac resynchronization therapy, a key treatment for heart failure.

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Translational Rabbit Model of Chronic Cardiac Pacing
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Translational Rabbit Model of Chronic Cardiac Pacing

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Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Related Experiment Videos

Last Updated: Jun 4, 2026

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

Translational Rabbit Model of Chronic Cardiac Pacing
06:14

Translational Rabbit Model of Chronic Cardiac Pacing

Published on: January 6, 2023

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

  • It examines the compatibility of magnetic resonance imaging (MRI) with existing cardiac pacemakers, addressing safety concerns.
  • The current status and future trajectory of leadless pacing systems are explored, highlighting miniaturization and enhanced functionality.
  • A curated review of significant scientific articles published in the last year provides further insights into the field.

    • Impact:

    • Informs clinicians about the latest CRT techniques and leadless pacing options.
    • Provides guidance on managing pacemaker patients undergoing MRI scans.
    • Highlights emerging trends and future directions in cardiac device therapy.
    • Facilitates evidence-based decision-making through a review of high-impact research.