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

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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 III: Characteristics of Dysrhythmias01:29

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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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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.
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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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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...
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Dysrhythmias I: Introduction01:15

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Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
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Related Experiment Video

Updated: Mar 1, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Atrial fibrillation: the current epidemic.

Carlos A Morillo1,2, Amitava Banerjee3, Pablo Perel4,5

  • 1Department of Cardiac Sciences, Division of Cardiology, Libin Cardiovascular Institute, University of Calgary, Calgary, AB, Canada.

Journal of Geriatric Cardiology : JGC
|June 9, 2017
PubMed
Summary

Atrial fibrillation (AF) is a growing global health concern, increasing stroke risk. This review examines the worldwide burden of AF and strategies for its detection and management.

Keywords:
AgingAnticoagulationAtrial fibrillationHeart failureHypertensionStroke

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Area of Science:

  • Cardiology
  • Public Health

Background:

  • Atrial fibrillation (AF) is the most prevalent clinical arrhythmia.
  • Untreated AF significantly elevates risks of stroke, systemic embolism, morbidity, and mortality.
  • Population aging is projected to cause an epidemic of AF in coming decades.

Purpose of the Study:

  • To review the global health burden of atrial fibrillation (AF).
  • To examine worldwide strategies for improving AF detection, prevention, and risk stratification.
  • To align with recent World Heart Federation recommendations.

Main Methods:

  • Literature review of observational cohort studies.
  • Analysis of global health trends and resource allocation for AF.
  • Synthesis of recent recommendations for AF management.

Main Results:

  • AF is increasing globally, particularly with aging populations.
  • Significant health resources are dedicated to AF detection and management.
  • Established strategies exist for AF risk stratification and prevention.

Conclusions:

  • AF represents a substantial and growing worldwide health challenge.
  • Global strategies are crucial for effective AF detection, prevention, and risk management.
  • Implementing recommended strategies can mitigate the impact of AF.