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4:2:1 conduction of an AF initiating trigger.

Kojodjojo P, Chong E, Lim TW, Seow SC - Indian Pacing Electrophysiol J (2015)

Bottom Line: Earliest activation was mapped to a focus in the superior vena cava (SVC) which was conducted in a 2:1 ratio to the atria which in turn was conducted with 2:1 ratio to the ventricles, resulting in an unusual 4:2:1 conduction of the SVC tachycardia. 1:1 conduction of the SVC tachycardia to the atrium preceded initiation of AF.During AF, SVC tachycardia continued unperturbed.Sinus rhythm was restored following catheter ablation of the focus.

View Article: PubMed Central - PubMed

Affiliation: National University Heart Centre, National University Hospital, 1E Kent Ridge Road, NUHS Tower Block, Level 9, 119228, Singapore.

ABSTRACT
A 44 year old male with idiopathic dilated cardiomyopathy was undergoing persistent atrial fibrillation (AF) ablation. Following antral ablation, AF terminated into a regular narrow complex rhythm. Earliest activation was mapped to a focus in the superior vena cava (SVC) which was conducted in a 2:1 ratio to the atria which in turn was conducted with 2:1 ratio to the ventricles, resulting in an unusual 4:2:1 conduction of the SVC tachycardia. 1:1 conduction of the SVC tachycardia to the atrium preceded initiation of AF. During AF, SVC tachycardia continued unperturbed. Sinus rhythm was restored following catheter ablation of the focus.

No MeSH data available.


Related in: MedlinePlus

12 Lead ECG after termination of AF.
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fig1: 12 Lead ECG after termination of AF.

Mentions: A 44 year old Chinese gentleman with symptomatic persistent atrial fibrillation (AF) and idiopathic dilated cardiomyopathy (ejection fraction of 40%) was undergoing AF ablation. After ipsilateral pairs of pulmonary veins were isolated, AF terminated and the following 12 lead ECG was recorded (Fig. 1, 50 mm/s speed).


4:2:1 conduction of an AF initiating trigger.

Kojodjojo P, Chong E, Lim TW, Seow SC - Indian Pacing Electrophysiol J (2015)

12 Lead ECG after termination of AF.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4834426&req=5

fig1: 12 Lead ECG after termination of AF.
Mentions: A 44 year old Chinese gentleman with symptomatic persistent atrial fibrillation (AF) and idiopathic dilated cardiomyopathy (ejection fraction of 40%) was undergoing AF ablation. After ipsilateral pairs of pulmonary veins were isolated, AF terminated and the following 12 lead ECG was recorded (Fig. 1, 50 mm/s speed).

Bottom Line: Earliest activation was mapped to a focus in the superior vena cava (SVC) which was conducted in a 2:1 ratio to the atria which in turn was conducted with 2:1 ratio to the ventricles, resulting in an unusual 4:2:1 conduction of the SVC tachycardia. 1:1 conduction of the SVC tachycardia to the atrium preceded initiation of AF.During AF, SVC tachycardia continued unperturbed.Sinus rhythm was restored following catheter ablation of the focus.

View Article: PubMed Central - PubMed

Affiliation: National University Heart Centre, National University Hospital, 1E Kent Ridge Road, NUHS Tower Block, Level 9, 119228, Singapore.

ABSTRACT
A 44 year old male with idiopathic dilated cardiomyopathy was undergoing persistent atrial fibrillation (AF) ablation. Following antral ablation, AF terminated into a regular narrow complex rhythm. Earliest activation was mapped to a focus in the superior vena cava (SVC) which was conducted in a 2:1 ratio to the atria which in turn was conducted with 2:1 ratio to the ventricles, resulting in an unusual 4:2:1 conduction of the SVC tachycardia. 1:1 conduction of the SVC tachycardia to the atrium preceded initiation of AF. During AF, SVC tachycardia continued unperturbed. Sinus rhythm was restored following catheter ablation of the focus.

No MeSH data available.


Related in: MedlinePlus