Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Disturbances in Heart Rhythm

Disturbances in Heart Rhythm

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...

Dysrhythmias VI: Management of Dysrhythmias

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...

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

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

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...

Dysrhythmias II: Classification of Tachyarrhythmias

Dysrhythmias II: Classification of Tachyarrhythmias

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...

Dysrhythmias III: Characteristics of Dysrhythmias

Dysrhythmias III: Characteristics of Dysrhythmias

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 minute.

Mechanism of Cardiac Arrhythmias

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.

You might also read

Related Articles

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

Sort by

Same author

Scientific Priorities Related to the Use of Double Sequential External Defibrillation in Patients With Refractory Cardiac Arrest: Report From a Multistakeholder Thinktank.

Journal of the American Heart Association·2025

Same author

Methodology and Conflict of Interest Management: 2025 International Liaison Committee on Resuscitation Consensus on Science With Treatment Recommendations.

Circulation·2025

Same author

Pediatric Life Support: 2025 International Liaison Committee on Resuscitation Consensus on Science With Treatment Recommendations.

Circulation·2025

Same author

Executive Summary: 2025 International Liaison Committee on Resuscitation Consensus on Science With Treatment Recommendations.

Circulation·2025

Same author

Part 3: Ethics: 2025 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care.

Circulation·2025

Same author

Part 2: Evidence Evaluation and Guidelines Development: 2025 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care.

Circulation·2025

Search research articles

Related Experiment Video

Updated: Jul 3, 2026

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

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

Published on: January 31, 2019

Tachyarrhythmias and defibrillation.

Ricardo A Samson¹, Dianne L Atkins

¹Pediatrics, University of Arizona, Tucson, AZ 85724-5073, USA. rsamson@peds.arizona.edu

Pediatric Clinics of North America

|August 5, 2008

Summary

This summary is machine-generated.

Prompt recognition and treatment of pediatric tachyarrhythmias are crucial for effective resuscitation. This review covers 2005 guidelines and recent literature on antiarrhythmics and defibrillation.

More Related Videos

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

Published on: August 26, 2021

Related Experiment Videos

Last Updated: Jul 3, 2026

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

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

Published on: January 31, 2019

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

Published on: August 26, 2021

Area of Science:

Pediatric Cardiology
Emergency Medicine
Resuscitation Science

Background:

Cardiac arrhythmias can lead to hemodynamic compromise, though less common in children than adults.
Effective and specific therapies are available for pediatric tachyarrhythmias.
Timely management of pediatric arrhythmias is vital during resuscitation.

Purpose of the Study:

To summarize the 2005 American Heart Association Guidelines for Pediatric Advanced Life Support (PALS) concerning tachyarrhythmias.
To provide an updated review of recent literature on pediatric tachyarrhythmia management since the 2005 guidelines.

Main Methods:

Review of the 2005 American Heart Association PALS guidelines.
Literature search for recent studies on pediatric tachyarrhythmias published after 2005.
Synthesis of guideline recommendations and current research findings.

Main Results:

The 2005 PALS guidelines provide a framework for managing pediatric tachyarrhythmias.
Recent literature offers updates on antiarrhythmic drug therapy and direct current countershock (defibrillation) for pediatric tachyarrhythmias.
Specific treatment strategies are effective in improving outcomes.

Conclusions:

Management of pediatric tachyarrhythmias is a critical component of pediatric resuscitation.
Adherence to established guidelines and awareness of recent literature are essential for optimal patient care.
Effective treatment of pediatric tachyarrhythmias can prevent severe hemodynamic compromise.