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Related Concept Videos

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 II: Atrial, Junctional and Ventricular Arrhythmias01:25

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 V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
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...
Mechanism of Cardiac Arrhythmias01:28

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.
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...

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Related Experiment Video

Updated: Jun 4, 2026

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

Published on: May 23, 2021

Treating arrhythmias: an expert opinion.

Nikolaos Dagres1, Philipp Sommer, Maria Anastasiou-Nana

  • 1University of Athens, Second University Cardiology Department , Attikon University Hospital, Rimini Haidari, Athens, Greece. nikolaosdagres@yahoo.de

Expert Opinion on Pharmacotherapy
|March 1, 2011
PubMed
Summary

Recent advancements in arrhythmia treatment include new drugs for atrial fibrillation like dronedarone and vernakalant. Novel antithrombotic agents such as dabigatran and rivaroxaban also show promise in managing arrhythmias.

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Robotic Ablation of Atrial Fibrillation
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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Related Experiment Videos

Last Updated: Jun 4, 2026

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

Robotic Ablation of Atrial Fibrillation
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Robotic Ablation of Atrial Fibrillation

Published on: May 29, 2015

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
28:13

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Published on: February 26, 2013

Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Significant progress in treating arrhythmias, particularly atrial fibrillation, which impacts millions.
  • Atrial fibrillation management remains a key challenge in cardiovascular medicine.

Purpose of the Study:

  • To review recent, clinically relevant developments in arrhythmia treatment.
  • To focus on novel agents for atrial fibrillation management and antithrombotic therapies.

Main Methods:

  • Extensive PubMed search using relevant keywords.
  • Review of recent literature on pharmacological treatments for arrhythmias.
  • Focus on dronedarone, vernakalant, and antithrombotic advancements.

Main Results:

  • Dronedarone is a proposed first-choice drug for atrial fibrillation but less effective than amiodarone and carries risks in severe heart failure.
  • Vernakalant offers effective, rapid pharmacological conversion of atrial fibrillation.
  • New oral anticoagulants like dabigatran and rivaroxaban show efficacy in stroke reduction without increased bleeding.

Conclusions:

  • Novel pharmacological agents are emerging for atrial fibrillation and ventricular arrhythmias.
  • Dronedarone has specific contraindications and potential risks.
  • New antithrombotic treatments offer effective stroke prevention in atrial fibrillation patients.