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Related Concept Videos

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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Dysrhythmias II: Classification of Tachyarrhythmias01:28

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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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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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Disturbances in Heart Rhythm01:29

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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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Mechanism of Cardiac Arrhythmias01:28

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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.
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Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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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: Dec 28, 2025

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
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Pseudoatrial Flutter: When the Problem Lies Outside the Heart.

Samuele Ceruti1, Marco Spagnoletti2, Romano Mauri2

  • 1Hôpitaux Universitaires de Genève, Department of Intensive Care, Genève, Switzerland.

Clinical Practice and Cases in Emergency Medicine
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PubMed
Summary
This summary is machine-generated.

Electrocardiogram (ECG) artifacts from movement disorders can mimic serious conditions, leading to unnecessary tests. This study highlights a pseudoatrial flutter caused by Parkinson

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Area of Science:

  • Cardiology
  • Medical Technology
  • Neurology

Background:

  • Electrocardiogram (ECG) artifacts are frequent in emergency medicine, often stemming from patient movement.
  • Unrecognized artifacts can lead to misdiagnosis, unnecessary investigations, increased healthcare costs, and clinical risks like hospital-acquired infections and thromboembolism.

Purpose of the Study:

  • To describe a specific type of ECG artifact mimicking a cardiac arrhythmia.
  • To illustrate the diagnostic challenge posed by movement-induced artifacts in emergency settings.

Main Methods:

  • Case presentation of an electrocardiogram (ECG) recording.
  • Analysis of artifactual waveform characteristics.
  • Correlation of artifact with observed patient movement disorder.

Main Results:

  • A pseudoatrial flutter waveform was identified on the ECG.
  • The artifact was directly attributed to a Parkinson's-like movement disorder.

Conclusions:

  • Movement disorders, such as Parkinson's disease, can generate artifactual ECG patterns that mimic true arrhythmias.
  • Prompt recognition of artifactual causes is crucial to avoid inappropriate clinical decisions and interventions.
  • Distinguishing artifact from true pathology is essential for efficient and safe emergency medicine practice.