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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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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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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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Related Experiment Video

Updated: Mar 21, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Atrial Fibrillation Ablation and Stroke.

Philip Aagaard1, David Briceno1, Zoltan Csanadi2

  • 1Department of Medicine, Albert Einstein College of Medicine, Montefiore Hospital, Bronx, NY, USA.

Cardiology Clinics
|May 7, 2016
PubMed
Summary

Catheter ablation effectively restores sinus rhythm in atrial fibrillation patients. However, it carries a risk of cerebral insults, which can be reduced through uninterrupted anticoagulation and monitoring for thrombus during the procedure.

Keywords:
AnticoagulationAtrial fibrillationSilent cerebral ischemiaStroke

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Area of Science:

  • Cardiology
  • Neurology
  • Medical Procedures

Background:

  • Catheter ablation is a common treatment for atrial fibrillation unresponsive to medication.
  • While generally safe, catheter ablation has associated risks, notably periprocedural cerebral insults.

Purpose of the Study:

  • To review the incidence, mechanisms, and impact of cerebral insults related to catheter ablation.
  • To outline methods for reducing catheter ablation-associated cerebral insults.

Main Methods:

  • This study is a review of existing literature.
  • It examines data on periprocedural cerebral insults during catheter ablation for atrial fibrillation.

Main Results:

  • Periprocedural cerebral insults are a recognized complication of catheter ablation.
  • Strategies such as uninterrupted anticoagulation and vigilant thrombus monitoring are crucial.

Conclusions:

  • Catheter ablation is a valuable tool for atrial fibrillation management.
  • Implementing specific procedural safeguards can significantly mitigate the risk of cerebral complications.