Introduction
Possible causes of atrial fibrillation
Classification
Five patterns of AF are distinguished, based on presentation, duration, and spontaneous termination of AF episodes:
1) First diagnosed - AF not diagnosed before
2) Paroxysmal - AF that terminates spontaneously or with intervention within 7 days of onset.
3) Persistent - AF sustained > 7 days
4) Long-standing persistent - Continuous AF > 12 months
5) Permanent - AF that is accepted by the patient and physician, and no further attempts to restore/maintain sinus rhythm will be undertaken.
Electrophysiological mechanisms of AF include focal mechanisms and re-entry, from a single or multiple sources (mainly from pulmonary veins). In focal AF, one or more rapidly firing foci cause fibrillatory conduction over the atria. AF produced by re-entry may involve one or more circuits.
ECG features
Atrial fibrillation in Wolff-Parkinson-White syndrome
ECG of atrial fibrillation in WPW
ECG 1 Atrial fibrillation with Right bundle branch block (RBBB)
ECG 2 Atrial fibrillation with RBBB + LAH
ECG 3 Atrial fibrillation with Left bundle branch block (LBBB)
ECG 4 FBI = Fast broad irregular tachycardia – atrial fibrillation with preexcitation
Management
Management of atrial fibrillation is a complex process that depends on underlying causes, symptoms, duration of atrial fibrillation, structural damage of the atria, comorbidities and age.
Therapy of atrial fibrillation has three goals:
To achieve this, there are 3 approaches:
Picture 1 European Society of Cardiology Guidelines 2020
References
Introduction
Possible causes of atrial fibrillation
Classification
Five patterns of AF are distinguished, based on presentation, duration, and spontaneous termination of AF episodes:
1) First diagnosed - AF not diagnosed before
2) Paroxysmal - AF that terminates spontaneously or with intervention within 7 days of onset.
3) Persistent - AF sustained > 7 days
4) Long-standing persistent - Continuous AF > 12 months
5) Permanent - AF that is accepted by the patient and physician, and no further attempts to restore/maintain sinus rhythm will be undertaken.
Electrophysiological mechanisms of AF include focal mechanisms and re-entry, from a single or multiple sources (mainly from pulmonary veins). In focal AF, one or more rapidly firing foci cause fibrillatory conduction over the atria. AF produced by re-entry may involve one or more circuits.
ECG features
Atrial fibrillation in Wolff-Parkinson-White syndrome
ECG of atrial fibrillation in WPW
ECG 1 Atrial fibrillation with Right bundle branch block (RBBB)
ECG 2 Atrial fibrillation with RBBB + LAH
ECG 3 Atrial fibrillation with Left bundle branch block (LBBB)
ECG 4 FBI = Fast broad irregular tachycardia – atrial fibrillation with preexcitation
Management
Management of atrial fibrillation is a complex process that depends on underlying causes, symptoms, duration of atrial fibrillation, structural damage of the atria, comorbidities and age.
Therapy of atrial fibrillation has three goals:
To achieve this, there are 3 approaches:
Picture 1 European Society of Cardiology Guidelines 2020
References