Re-modeling of the earliest activation of sinoatrial node by using Carto3 electroanatomical mapping ;system
QI Shu-ying
LI Jie
HU Zhen-yan
LI Bin
WANG Xiao-ye
XU Na
LUAN Xue-bing
XI Ai-xue
WANG Dong-mei
Abstract：Objective To map the earliest activation of sinoatrial node by using Carto3 electroanatomical mapping system (Carto3) in patients with normal cardiac structure undergone radiofrequency ablation (RFA) via femoral vein. Methods The patients with arrhythmia (n=74) undergone RFA via femoral vein by a same surgeon were chosen from Jul. 2014 to Apr. 2015. After RFA finished under Carto3 guide, FAM mode was used for remodeling superior vena cava and partial right atrium. The earliest activation of sinoatrial node was searched by high-density activation mapping under sinus rhythm. Results Organic heart diseases were excluded in 74 patients. The distance from the earliest activation of sinoatrial node to superior vena cava (latitude) was 27.05 mm±7.54 mm (16 mm-52 mm, median=26.85 mm), and in 54 patients, the distance was 20 mm-35 mm (72.97%). The median of sinoatrial node (latitude) mapped at LAO45°+SUP position was at 9 o’clock (5-12 o’clock), and in 30 patients (40.54%), the median was 9 o’clock. Conclusion Carto3 is fast and easy for mapping the earliest activation of sinoatrial node. The variation of sinoatrial node position can partly explain the inconformity of P wave of normal sinus rhythm. The position of sinoatrial node should be mapped at first during RFA in treatment of arrhythmia originated from upper right atrium for avoiding the complications of sinoatrial node injury.
Keywords：Sinoatrial nodeRight atriumThree-dimensionalMappingSuperior vena cavaArrhythmia
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：2( 787-788 )