Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

1.8K
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
1.8K
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

1000
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
1000
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

1.5K
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...
1.5K
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

955
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...
955
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

977
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...
977
Coronary Circulation01:21

Coronary Circulation

8.3K
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
8.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Longer Baseline Left Ventricular Activation Time Is Associated With Lower Mortality and Lower Risk of Heart Failure Hospitalization in Cardiac Resynchronization Therapy Recipients.

Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·2026
Same author

The Impact of Chronic Kidney Disease on In-Hospital Outcomes in Patients With Acute Respiratory Distress Syndrome.

Canadian respiratory journal·2026
Same author

Real World Performance of an Individualized Antitachycardia Pacing Algorithm.

Journal of cardiovascular electrophysiology·2025
Same author

The PARADIGM Study: Procedural Augmented Reality Assessment in a 3-Dimensional Image-Guided Modality.

Circulation. Arrhythmia and electrophysiology·2025
Same author

Increased fluid accumulation, reduced physical activity and heart rate variability during national holidays in patients with cardiac implantable electronic devices.

European journal of preventive cardiology·2025
Same author

Temporal changes in device-derived daily activity related to ventricular arrhythmias from the CERTITUDE registry.

Heart rhythm O2·2024
Same journal

Pulmonary Vascular Disease Across the Continuum: From Mechanisms to Precision Care.

Heart failure clinics·2026
Same journal

Long-term Complications of Pulmonary Embolism: Which Is the Optimal Follow-Up?

Heart failure clinics·2026
Same journal

Recent Advances in Pulmonary Hypertension Management.

Heart failure clinics·2026
Same journal

The Role of Machine Learning and Artificial Intelligence in Drug Discovery and Clinical Care of Pulmonary Hypertension.

Heart failure clinics·2026
Same journal

Portopulmonary Hypertension: Current Perspectives.

Heart failure clinics·2026
Same journal

Exercise Training and Cardiac Rehabilitation in Chronic Thromboembolic Pulmonary Hypertension.

Heart failure clinics·2026
See all related articles

Related Experiment Video

Updated: Mar 11, 2026

Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology
10:46

Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology

Published on: May 26, 2015

13.9K

Coronary Sinus Lead Positioning.

Attila Roka1, Rasmus Borgquist1, Jagmeet Singh1

  • 1Cardiology Division, Cardiac Arrhythmia Service, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA.

Heart Failure Clinics
|November 26, 2016
PubMed
Summary
This summary is machine-generated.

Cardiac resynchronization therapy (CRT) improves outcomes but has high nonresponse rates. Optimizing left ventricular lead placement is crucial for successful CRT in heart failure patients.

Keywords:
Cardiac resynchronization therapyCoronary sinusHeart failurePacingTargeted lead placement

More Related Videos

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
09:13

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

Published on: April 21, 2013

28.6K
Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease
06:39

Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease

Published on: February 18, 2020

7.3K

Related Experiment Videos

Last Updated: Mar 11, 2026

Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology
10:46

Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology

Published on: May 26, 2015

13.9K
Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
09:13

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

Published on: April 21, 2013

28.6K
Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease
06:39

Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease

Published on: February 18, 2020

7.3K

Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Cardiac resynchronization therapy (CRT) is indicated for heart failure patients with electrical dyssynchrony, improving morbidity and mortality.
  • However, a significant proportion of patients do not respond to CRT, necessitating optimization of current techniques.
  • Optimal coronary sinus (CS) lead positioning is critical for effective CRT.

Purpose of the Study:

  • To review factors influencing CRT efficacy, focusing on left ventricular lead placement.
  • To discuss current and emerging strategies for improving CRT response rates.

Main Methods:

  • Review of literature on CRT, coronary sinus anatomy, lead placement techniques, and patient-specific factors.
  • Analysis of factors affecting CRT response, including heart failure etiology, dyssynchrony type, scar burden, CS anatomy, and phrenic nerve capture.

Main Results:

  • Optimal CS lead positioning remains a challenge, impacting CRT success rates.
  • Patient-specific factors significantly influence CRT efficacy.
  • Alternative LV lead implantation strategies are sometimes necessary.

Conclusions:

  • Improving CRT outcomes requires addressing challenges in lead placement and patient selection.
  • Further research into novel implantation techniques and patient factors is warranted to minimize CRT nonresponse.