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Related Concept Videos

Disturbances in Heart Rhythm01:29

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 II: Classification of Tachyarrhythmias01:28

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 Dysrhythmias01:29

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.
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...
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

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, and...
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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: Jun 12, 2026

Measuring Cardiac Autonomic Nervous System (ANS) Activity in Toddlers - Resting and Developmental Challenges
08:22

Measuring Cardiac Autonomic Nervous System (ANS) Activity in Toddlers - Resting and Developmental Challenges

Published on: February 25, 2016

Simplified Approach to a Child with Tachyarrhythmia.

Anuja Gadre1,2, Manojkumar Rohit3

  • 1Department of Cardiology, Post Graduate Institute of Medical Education and Research, Chandigarh, India.

Indian Journal of Pediatrics
|June 10, 2026
PubMed
Summary

Pediatric tachyarrhythmias present diagnostic and management challenges. Understanding normal pediatric electrocardiograms (ECGs) is crucial for identifying abnormal rhythms and guiding treatment in children.

Keywords:
Congenital heart diseasePediatricsTachyarrhythmia

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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
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Published on: May 23, 2021

Area of Science:

  • Pediatric Cardiology
  • Electrophysiology
  • Pediatric Critical Care

Background:

  • Childhood arrhythmias, particularly tachyarrhythmias, pose diagnostic and therapeutic difficulties for pediatricians.
  • These arrhythmias can be idiopathic or associated with congenital heart disease, ion channel defects, or occur post-operatively.
  • Symptoms range widely, from nonspecific signs like irritability to severe manifestations such as heart failure and syncope.

Purpose of the Study:

  • To emphasize the importance of recognizing normal electrocardiogram (ECG) patterns in pediatric patients.
  • To highlight the challenges in diagnosing and managing tachyarrhythmias in children.
  • To underscore the need for expertise in both acute and long-term management strategies.

Main Methods:

  • Review of normal pediatric ECGs across different age groups.
  • Analysis of clinical presentations and associated conditions of pediatric tachyarrhythmias.
  • Discussion of current management approaches, including medical and interventional therapies.

Main Results:

  • Distinguishing abnormal pediatric ECGs from normal variants requires comprehensive knowledge of age-specific norms.
  • Tachyarrhythmias in children can present with diverse symptoms and etiologies.
  • Effective management necessitates a multidisciplinary approach involving pediatricians and cardiologists.

Conclusions:

  • Accurate diagnosis of pediatric tachyarrhythmias relies on a solid understanding of normal ECG development.
  • Pediatricians and cardiologists must be proficient in managing these complex cardiac conditions.
  • Integrated knowledge of diagnosis, acute care, and long-term treatment is vital for optimal patient outcomes.