Abstract
LA Remodeling in AF. Background: Long-standing atrial fibrillation (AF) changes left atrial (LA) morphology, and the LA size is related to recurrence after radiofrequency catheter ablation (RFCA). We hypothesize that LA morphology, based on embryological origin, affects the outcome of RFCA. Methods: We analyzed 3D computed tomographic (CT) images of LA in 70 patients with AF (54 males, 55.6 ± 10.5 years old, paroxysmal AF (PAF):persistent AF (PeAF) = 32:38) who underwent RFCA. Each LA image was divided into venous atrium (VA), anterior LA (ALA), LA appendage (LAA), and both antrum. Absolute and relative volumes were calculated, and the lengths of linear ablation sites were measured. Results: (1) In patients with the mean LA voltage ≤ 2.0 mV, LA volume, especially ALA, was larger (P < 0.01) compared to those with LA voltage > 2.0 mV. (2) The total LA volume was significantly larger (P < 0.01) and LAA voltages (P < 0.05) and conduction velocities (P < 0.05) were lower in patients with PeAF than in those with PAF. (3) In patients with recurrence, LA volume was generally larger (P < 0.01) than in those without recurrence. In PAF patients with recurrence, the relative volume of ALA was significantly larger (P < 0.01) than those without recurrence. Conclusions Morphologically remodeled LA has low endocardial voltage, and enlargement of ALA is more significant in electroanatomically remodeled LA. The disproportional enlargement of ALA was observed more often in PAF patients with recurrence after ablation than those without recurrence. (J Cardiovasc Electrophysiol, Vol. 20, pp. 1349-1356, December 2009)
| Original language | English |
|---|---|
| Pages (from-to) | 1349-1356 |
| Number of pages | 8 |
| Journal | Journal of Cardiovascular Electrophysiology |
| Volume | 20 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2009 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Cardiology and Cardiovascular Medicine
- Physiology (medical)
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The relationship between endocardial voltage and regional volume in electroanatomical remodeled left atria in patients with atrial fibrillation : Comparison of three-dimensional computed tomographic images and voltage mapping. / Park, Jae Hyung; Pak, Hui Nam; Choi, Eun Jeoung; Jang, Jin Kun; Kim, Sook Kyoung; Choi, Dong Hoon; Choi, Jong Il; Hwang, Chun; Kim, Young Hoon.
In: Journal of Cardiovascular Electrophysiology, Vol. 20, No. 12, 01.12.2009, p. 1349-1356.Research output: Contribution to journal › Article
TY - JOUR
T1 - The relationship between endocardial voltage and regional volume in electroanatomical remodeled left atria in patients with atrial fibrillation
T2 - Comparison of three-dimensional computed tomographic images and voltage mapping
AU - Park, Jae Hyung
AU - Pak, Hui Nam
AU - Choi, Eun Jeoung
AU - Jang, Jin Kun
AU - Kim, Sook Kyoung
AU - Choi, Dong Hoon
AU - Choi, Jong Il
AU - Hwang, Chun
AU - Kim, Young Hoon
PY - 2009/12/1
Y1 - 2009/12/1
N2 - LA Remodeling in AF. Background: Long-standing atrial fibrillation (AF) changes left atrial (LA) morphology, and the LA size is related to recurrence after radiofrequency catheter ablation (RFCA). We hypothesize that LA morphology, based on embryological origin, affects the outcome of RFCA. Methods: We analyzed 3D computed tomographic (CT) images of LA in 70 patients with AF (54 males, 55.6 ± 10.5 years old, paroxysmal AF (PAF):persistent AF (PeAF) = 32:38) who underwent RFCA. Each LA image was divided into venous atrium (VA), anterior LA (ALA), LA appendage (LAA), and both antrum. Absolute and relative volumes were calculated, and the lengths of linear ablation sites were measured. Results: (1) In patients with the mean LA voltage ≤ 2.0 mV, LA volume, especially ALA, was larger (P < 0.01) compared to those with LA voltage > 2.0 mV. (2) The total LA volume was significantly larger (P < 0.01) and LAA voltages (P < 0.05) and conduction velocities (P < 0.05) were lower in patients with PeAF than in those with PAF. (3) In patients with recurrence, LA volume was generally larger (P < 0.01) than in those without recurrence. In PAF patients with recurrence, the relative volume of ALA was significantly larger (P < 0.01) than those without recurrence. Conclusions Morphologically remodeled LA has low endocardial voltage, and enlargement of ALA is more significant in electroanatomically remodeled LA. The disproportional enlargement of ALA was observed more often in PAF patients with recurrence after ablation than those without recurrence. (J Cardiovasc Electrophysiol, Vol. 20, pp. 1349-1356, December 2009)
AB - LA Remodeling in AF. Background: Long-standing atrial fibrillation (AF) changes left atrial (LA) morphology, and the LA size is related to recurrence after radiofrequency catheter ablation (RFCA). We hypothesize that LA morphology, based on embryological origin, affects the outcome of RFCA. Methods: We analyzed 3D computed tomographic (CT) images of LA in 70 patients with AF (54 males, 55.6 ± 10.5 years old, paroxysmal AF (PAF):persistent AF (PeAF) = 32:38) who underwent RFCA. Each LA image was divided into venous atrium (VA), anterior LA (ALA), LA appendage (LAA), and both antrum. Absolute and relative volumes were calculated, and the lengths of linear ablation sites were measured. Results: (1) In patients with the mean LA voltage ≤ 2.0 mV, LA volume, especially ALA, was larger (P < 0.01) compared to those with LA voltage > 2.0 mV. (2) The total LA volume was significantly larger (P < 0.01) and LAA voltages (P < 0.05) and conduction velocities (P < 0.05) were lower in patients with PeAF than in those with PAF. (3) In patients with recurrence, LA volume was generally larger (P < 0.01) than in those without recurrence. In PAF patients with recurrence, the relative volume of ALA was significantly larger (P < 0.01) than those without recurrence. Conclusions Morphologically remodeled LA has low endocardial voltage, and enlargement of ALA is more significant in electroanatomically remodeled LA. The disproportional enlargement of ALA was observed more often in PAF patients with recurrence after ablation than those without recurrence. (J Cardiovasc Electrophysiol, Vol. 20, pp. 1349-1356, December 2009)
UR - http://www.scopus.com/inward/record.url?scp=70450212168&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70450212168&partnerID=8YFLogxK
U2 - 10.1111/j.1540-8167.2009.01557.x
DO - 10.1111/j.1540-8167.2009.01557.x
M3 - Article
C2 - 19602027
AN - SCOPUS:70450212168
VL - 20
SP - 1349
EP - 1356
JO - Journal of Cardiovascular Electrophysiology
JF - Journal of Cardiovascular Electrophysiology
SN - 1045-3873
IS - 12
ER -