Related Experiment Video

Updated: Apr 24, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
23:33

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

Published on: February 28, 2012

84.2K

Anticoagulation for cardioversion of atrial arrhythmias

J Mayet1, R S More, G C Sutton

  • 1Department of Cardiology, Hillingdon Hospital, London, U.K.

European Heart Journal
|May 23, 1998
PubMed

Insights

For patients undergoing cardioversion for atrial fibrillation or flutter, 3 weeks of anticoagulation before and 4 weeks after is recommended. Transoesophageal echocardiography can help select patients who may not need prior anticoagulation.

Area of Science:

  • Cardiology
  • Internal Medicine

Background:

  • Atrial fibrillation and flutter are common arrhythmias.
  • Cardioversion is a procedure to restore normal heart rhythm.
  • Anticoagulation is crucial to prevent stroke during cardioversion.

Purpose of the Study:

  • To provide recommendations for anticoagulation management in patients undergoing cardioversion for atrial fibrillation or flutter.
  • To evaluate the role of transoesophageal echocardiography in guiding anticoagulation strategies.

Main Methods:

  • Review of current guidelines and clinical evidence.
  • Analysis of anticoagulation protocols for elective and acute cardioversion.
  • Consideration of transoesophageal echocardiography use.

Main Results:

  • Advocates 3 weeks of anticoagulation prior to and 4 weeks post-cardioversion for chronic cases.
  • Suggests immediate heparin for acute presentations, with transoesophageal echocardiography to exclude thrombi before cardioversion if no spontaneous reversion.
  • Recommends 4 weeks of oral anticoagulation post-procedure.
  • Proposes 3 weeks of anticoagulation followed by elective cardioversion and 4 weeks post-procedure if transoesophageal echocardiography is unavailable.

Conclusions:

  • Anticoagulation duration is critical for stroke prevention in cardioversion.
  • Transoesophageal echocardiography can personalize anticoagulation strategies.
  • A standardized approach to anticoagulation improves patient safety during cardioversion.

More Related Videos

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation28:13

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

Published on: February 26, 2013

34.6K
Robotic Ablation of Atrial Fibrillation11:21

Robotic Ablation of Atrial Fibrillation

Published on: May 29, 2015

21.6K

Related Concept Videos

Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers01:22

Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers

Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
4.2K
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
2.6K
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
2.7K
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...
5.2K
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
481
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...
1.1K