Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2015 Jan 2;1(1):18-21.
doi: 10.1016/j.hrcr.2014.10.003. eCollection 2015 Jan.

Focal atrial fibrillation presenting in the origin of atrial tachycardia

Affiliations
Case Reports

Focal atrial fibrillation presenting in the origin of atrial tachycardia

Chin-Yu Lin et al. HeartRhythm Case Rep. .
No abstract available

Keywords: AF, atrial fibrillation; AT, atrial tachycardia; Atrial fibrillation; Atrial tachycardia; CS, coronary sinus; ECG, electrocardiogram; LA, left atrium; RA, right atrium; Radiofrequency ablation.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Electrocardiogram, intracardiac electrogram with entrainment, and 3-dimensional (3D) electroanatomic map of patient 1. A: The surface electrocardiogram. B: The electrogram of patient 1 shows atrial tachycardia. Entrainment was performed from the posterior wall of the LA with a postpacing interval of 453 ms. C: The electrogram recorded when the ablator tip in the atrial tachycardia origin site reveals fractionated irregular rhythm as atrial fibrillation with 2:1 and 3:1 conduction. D: The 3D atrial activation map reveals atrial activation starting rhythmically at a small area (0.25 cm2) from where it spread centrifugally (black arrows). The electrogram on the right side reveals a transition from atrial fibrillation in the central area to an organized atrial tachycardia. E: The 3D left atrial voltage map reveals a large low-voltage zone in the posterior wall. The electrogram on the right side reveals a local signal in sinus rhythm after ablation. ABL = tip of ablator; CS = coronary sinus; CSD = distal coronary sinus; CSM = middle coronary sinus; CSP = proximal coronary sinus; LA = left atrium; LIPV = left inferior pulmonary vein; LSPV = left superior pulmonary vein; RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein.
Figure 2
Figure 2
Electrocardiogram, intracardiac electrogram with entrainment, and 3-dimensional (3D) electroanatomic map of patient 2. A: The surface electrocardiogram. B: The electrogram of patient 2 shows atrial tachycardia. Entrainment was performed from the high crista terminalis with a postpacing interval of 438 ms. C: The electrogram recorded when the ablator tip in the atrial tachycardia origin site reveals fractionated irregular rhythm as atrial fibrillation with 2:1 and 3:1 conduction. D: The 3D atrial activation map reveals atrial activation starting rhythmically at a small area (0.25 cm2) from where it spreads centrifugally (black arrows). The electrogram on the right side reveals a transition from atrial fibrillation in the central area to an organized atrial tachycardia. E: The 3D right atrial voltage map reveals a moderate low-voltage zone in the septum. The electrogram on the right side reveals a local signal in sinus rhythm after ablation. ABL = tip of ablator; CS = coronary sinus; CSD = distal coronary sinus; CSM = middle coronary sinus; CSP = proximal coronary sinus; CT = crista terminalis; RA = right atrium

Similar articles

References

    1. Patel A., Markowitz S.M. Atrial tachycardia: mechanisms and management. Expert Rev Cardiovasc Ther. 2008;6:811–822. - PubMed
    1. Chen S.A., Chiang C.E., Yang C.J., Cheng C.C., Wu T.J., Wang S.P., Chiang B.N., Chang M.S. Sustained atrial tachycardia in adult patients: electrophysiological characteristics, pharmacological response, possible mechanisms, and effects of radiofrequency ablation. Circulation. 1994;90:1262–1278. - PubMed
    1. Chang H.Y., Lo L.W., Lin Y.J. Long-term outcome of catheter ablation in patients with atrial fibrillation originating from the superior vena cava. J Cardiovasc Electrophysiol. 2012;23:955–961. - PubMed
    1. Steven D., Roberts-Thomson K.C., Seiler J., Michaud G.F., John R.M., Stevenson W.G. Fibrillation in the superior vena cava mimicking atrial tachycardia. Circ Arrhythm Electrophysiol. 2009;2:e4–e7. - PubMed
    1. Shah D.C., Haissaguerre M., Jais P., Clementy J. High-resolution mapping of tachycardia originating from the superior vena cava: evidence of electrical heterogeneity, slow conduction, and possible circus movement reentry. J Cardiovasc Electrophysiol. 2002;13:388–392. - PubMed

Publication types

LinkOut - more resources