Af with wide QRS tachycardia
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Atrial Tachycardia
Atrial tachycardia can originate from focal sites in the atria through mechanisms like automaticity, triggered activity, or microreentry, or can involve macroreentrant circuits circulating around anatomical barriers; focal atrial tachycardias are identified by characteristics like initiation with pacing or termination with adenosine while macroreentrant atrial tachycardias involve larger reentry circuits; the site of origin of atrial tachycardia can be localized using electrocardiographic criteria like the morphology and polarity of P-waves.
ECG: Atrial Flutter
Daniel, a 50-year-old male, presented with palpitations and chest pain for 2 hours. His ECG showed atrial flutter with an atrial rate of 300 beats/min and a 4:1 heart rate of 75 beats/min, indicating incomplete right bundle branch block. Atrial flutter is a macro-reentrant arrhythmia involving a reentrant pathway, most commonly in the cavo-tricuspid isthmus. ECG findings include sawtooth-shaped flutter waves and a constant atrial rate of around 300 beats/min. Treatment involves cardioversion, anticoagulation, antiarrhythmic drugs, or catheter ablation of the reentrant pathway.
Atrial fibrillation & Atrial flutter
Atrial fibrillation and atrial flutter are types of arrhythmia where the heart beats irregularly. Atrial fibrillation occurs when rapid, irregular electrical signals cause the heart's upper chambers (atria) to beat very fast and irregularly. Atrial flutter is similar but the heart beats fast in a regular pattern. These conditions are diagnosed through electrocardiograms which detect abnormal heart rhythms. Holter monitors and event recorders can also detect arrhythmias over longer periods of time when symptoms occur. Complications include stroke and heart failure, so treatment focuses on rate or rhythm control and preventing clots.
11.atrial flutter for basic ep.final
Atrial flutter is a reentrant tachycardia involving the right atrium. There are two main types - typical atrial flutter which revolves counterclockwise around the tricuspid annulus, and reverse typical atrial flutter which revolves clockwise. Catheter ablation aims to create a continuous linear lesion across the cavotricuspid isthmus to block conduction and terminate the arrhythmia. Successful ablation is confirmed by the inability to induce flutter and demonstration of bidirectional conduction block across the ablation line.
Atrial flutter (AFl) – management principals
Atrial flutter- an uncommon arrhythmia and understanding of its pathophysiology, types and treatment options...
9.avnrt chang sl-0324-2
1) Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common type of supraventricular tachycardia. It involves a reentrant circuit utilizing the fast and slow pathways within the AV node.
2) There are typical and atypical forms of AVNRT depending on the direction of conduction through the fast and slow pathways. In typical AVNRT, antegrade conduction is down the slow pathway and retrograde up the fast pathway. In atypical AVNRT the directions are reversed.
3) Ablation of the slow pathway is an effective treatment for AVNRT and can be performed without damaging the AV node since only a portion of the circuit
Recommended
Atrial Tachycardia
Atrial tachycardia can originate from focal sites in the atria through mechanisms like automaticity, triggered activity, or microreentry, or can involve macroreentrant circuits circulating around anatomical barriers; focal atrial tachycardias are identified by characteristics like initiation with pacing or termination with adenosine while macroreentrant atrial tachycardias involve larger reentry circuits; the site of origin of atrial tachycardia can be localized using electrocardiographic criteria like the morphology and polarity of P-waves.
ECG: Atrial Flutter
Daniel, a 50-year-old male, presented with palpitations and chest pain for 2 hours. His ECG showed atrial flutter with an atrial rate of 300 beats/min and a 4:1 heart rate of 75 beats/min, indicating incomplete right bundle branch block. Atrial flutter is a macro-reentrant arrhythmia involving a reentrant pathway, most commonly in the cavo-tricuspid isthmus. ECG findings include sawtooth-shaped flutter waves and a constant atrial rate of around 300 beats/min. Treatment involves cardioversion, anticoagulation, antiarrhythmic drugs, or catheter ablation of the reentrant pathway.
Atrial fibrillation & Atrial flutter
Atrial fibrillation and atrial flutter are types of arrhythmia where the heart beats irregularly. Atrial fibrillation occurs when rapid, irregular electrical signals cause the heart's upper chambers (atria) to beat very fast and irregularly. Atrial flutter is similar but the heart beats fast in a regular pattern. These conditions are diagnosed through electrocardiograms which detect abnormal heart rhythms. Holter monitors and event recorders can also detect arrhythmias over longer periods of time when symptoms occur. Complications include stroke and heart failure, so treatment focuses on rate or rhythm control and preventing clots.
11.atrial flutter for basic ep.final
Atrial flutter is a reentrant tachycardia involving the right atrium. There are two main types - typical atrial flutter which revolves counterclockwise around the tricuspid annulus, and reverse typical atrial flutter which revolves clockwise. Catheter ablation aims to create a continuous linear lesion across the cavotricuspid isthmus to block conduction and terminate the arrhythmia. Successful ablation is confirmed by the inability to induce flutter and demonstration of bidirectional conduction block across the ablation line.
Atrial flutter (AFl) – management principals
Atrial flutter- an uncommon arrhythmia and understanding of its pathophysiology, types and treatment options...
9.avnrt chang sl-0324-2
1) Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common type of supraventricular tachycardia. It involves a reentrant circuit utilizing the fast and slow pathways within the AV node.
2) There are typical and atypical forms of AVNRT depending on the direction of conduction through the fast and slow pathways. In typical AVNRT, antegrade conduction is down the slow pathway and retrograde up the fast pathway. In atypical AVNRT the directions are reversed.
3) Ablation of the slow pathway is an effective treatment for AVNRT and can be performed without damaging the AV node since only a portion of the circuit
Arrhythmia news no.40
1) The digital ESC Congress 2020 attracted over 116,000 healthcare professionals from 211 countries, focusing on new knowledge in arrhythmias and device therapy.
2) New guidelines and studies provided updates on atrial fibrillation screening and management, showing benefits of early rhythm control and new anticoagulants.
3) Studies explored new pacing approaches like His bundle and left bundle pacing to improve effectiveness and reduce fluoroscopy time.
The clinical application of intracardiac echocardiography in cardiac
The clinical application of intracardiac echocardiography in cardiac
Oral anticoagulants in patients with atrial fibrillation
Oral anticoagulants in patients with atrial fibrillation
THRS allied professional training course
A meeting was held on August 10, 2019 (Saturday) in room 803 of the Taipei Chang Yung-fa International Convention Center. The meeting location and date are provided.
More Related Content
More from Taiwan Heart Rhythm Society
Arrhythmia news no.40
1) The digital ESC Congress 2020 attracted over 116,000 healthcare professionals from 211 countries, focusing on new knowledge in arrhythmias and device therapy.
2) New guidelines and studies provided updates on atrial fibrillation screening and management, showing benefits of early rhythm control and new anticoagulants.
3) Studies explored new pacing approaches like His bundle and left bundle pacing to improve effectiveness and reduce fluoroscopy time.
The clinical application of intracardiac echocardiography in cardiac
The clinical application of intracardiac echocardiography in cardiac
Oral anticoagulants in patients with atrial fibrillation
Oral anticoagulants in patients with atrial fibrillation
THRS allied professional training course
A meeting was held on August 10, 2019 (Saturday) in room 803 of the Taipei Chang Yung-fa International Convention Center. The meeting location and date are provided.
More from Taiwan Heart Rhythm Society (20)
The clinical application of intracardiac echocardiography in cardiac
The clinical application of intracardiac echocardiography in cardiac
Oral anticoagulants in patients with atrial fibrillation
Oral anticoagulants in patients with atrial fibrillation
Af with wide QRS tachycardia
- 1. A Wide QRS Tachycardia: What is the mechanism? 64 歲男性主訴心悸。
- 2. 心電圖顯示 AF and intermittent wide QRS tachycardia。 Wide QRS tachycardia 有 可能是 aberrant conduction、VT、或是 pre-excited tachycardia。根據 Morphology criteria：V1 為 monophasic R waves 而 V6 為 RS wave with R/S ratio >1，left axis deviation， aberrant conduction 可能性較低。根據 Antunes criteria 來判斷 VT 或 是 pre-excitation: 首先 precordial lead V4 to V6 沒有 negative QRS complexes; 再 者 precordial lead V2 to V6 沒有 QR pattern, 因此傾向此 wide QRS tachycardia 為 Pre-excited tachycardia，此病患電氣生理檢查證實病患心律為 left posterior accessory pathway，經電氣燒灼術治療後成功。