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Related Concept Videos

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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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.
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Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

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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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Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

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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 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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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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Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
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Junctional ectopic rhythm after AVNRT ablation: An underrecognized complication.

Nathan Kusterer1, Gustavo Morales1, Muhammad Butt1

  • 1Division of Cardiovascular Medicine, Gill Heart Institute, University of Kentucky and Lexington VAMC, Lexington, KY, USA.

Pacing and Clinical Electrophysiology : PACE
|December 22, 2017
PubMed
Summary
This summary is machine-generated.

Junctional ectopic rhythm (JER) after atrioventricular nodal reentrant tachycardia (AVNRT) ablation may be underestimated. While often transient, JER can be debilitating and require further intervention, highlighting its importance as a potential complication.

Keywords:
AVNRTablationjunctional ectopic rhythmjunctional ectopic tachycardia

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Research

Background:

  • Atrioventricular nodal reentrant tachycardia (AVNRT) ablation is a common treatment.
  • Junctional ectopic rhythm (JER) post-ablation is considered rare but potentially underreported.
  • Understanding JER incidence is crucial for patient management.

Purpose of the Study:

  • To determine the incidence of JER following AVNRT ablation.
  • To assess the clinical significance and outcomes of JER post-AVNRT ablation.
  • To compare institutional findings with existing literature.

Main Methods:

  • Retrospective review of institutional AVNRT ablation cases (2009-2016).
  • Extensive literature search for AVNRT ablation case series.
  • Analysis of reported complications, focusing on JER occurrence.

Main Results:

  • Institutional data: 4.8% prevalence of JER post-AVNRT ablation (6/126 patients).
  • Literature review: 0.008% prevalence of JER (3/37,541 patients), primarily in pediatric cases.
  • JER can be asymptomatic, persistent, or require repeat ablation.

Conclusions:

  • JER may be an underreported complication of AVNRT ablation.
  • JER can range from transient and self-limiting to debilitating.
  • Clinical vigilance and further research are warranted for JER management.