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Related Concept Videos

Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

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Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
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Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

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Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
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Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

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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 heart...
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ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
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Increased pulse rate01:17

Increased pulse rate

710
Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
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Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

15
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
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Related Experiment Video

Updated: Aug 10, 2025

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
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Idiopathic Ventricular Tachycardia.

Robert C Ward1, Martin van Zyl1, Christopher V DeSimone1

  • 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902, USA.

Journal of Clinical Medicine
|February 11, 2023
PubMed
Summary
This summary is machine-generated.

Idiopathic ventricular tachycardia (VT) in patients with normal hearts can cause significant illness. This review details specialized catheter ablation techniques for treating VT originating from various heart locations.

Keywords:
cardiac anatomycatheter ablationelectrocardiogramventricular tachycardia

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Ablation

Background:

  • Idiopathic ventricular tachycardia (VT) affects individuals with structurally normal hearts, leading to morbidity and occasional mortality.
  • Accurate diagnosis and treatment depend on understanding VT mechanisms, cardiac anatomy, and electrocardiogram (ECG) findings.

Purpose of the Study:

  • To review specialized approaches for the effective and safe catheter ablation of idiopathic VT.
  • To cover VT originating from specific anatomical sites including outflow tracts, fascicles, papillary muscles, and moderator band.

Main Methods:

  • This is a review article, synthesizing existing knowledge and clinical experience.
  • Focuses on the application of catheter ablation as a therapeutic strategy for idiopathic VT.

Main Results:

  • Catheter ablation is a viable treatment option for patients intolerant to antiarrhythmic drugs or those with ineffective medical management.
  • Discusses specific anatomical targets and considerations for successful ablation procedures.

Conclusions:

  • Effective and safe ablation of idiopathic VT is achievable with specialized techniques tailored to the origin of the arrhythmia.
  • Catheter ablation offers a potentially curative treatment for select patients with idiopathic VT.