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目的:探讨多层螺旋CT下和Ensite3000标测系统下左心房食管间距离的相关性。方法:选择20例阵发性心房颤动患者,分别于导管射频消融前行多层螺旋CT测量左心房食管间距离及于消融术中在En-site3000标测系统下测量左心房食管间距离,并比较其相关性。结果:多层螺旋CT测量的左心房食管间最短距离为(3.5±0.8)mm,三维标测系统测量的左心房食管间最短距离为(3.2±1.1)mm,Pearson相关分析表明,2种方法测量下的左心房食管间最短距离呈正相关(r=0.8,P<0.05)。结论:Ensite3000标测系统下测量左心房食管间距离可行,间接说明远离左心房后壁或避开与食管紧靠的左心房后壁的心房颤动导管射频消融策略在临床上可行。
Objective: To explore the correlation between the left atrium and esophagus under Ensite 3000 mapping system under multi-slice spiral CT. Methods: Twenty patients with paroxysmal atrial fibrillation were selected to measure the distance between the left atrium and esophagus before radiofrequency catheter ablation. The distance between the left atrium and the esophagus was measured under the En-site 3000 mapping system in ablation Compare their relevance. Results: The shortest distance between the left atrium and the esophagus measured by MSCT was (3.5 ± 0.8) mm, and the shortest distance between the left atrium and the esophagus measured by the 3D mapping system was (3.2 ± 1.1) mm. Pearson correlation analysis showed that the two methods The shortest distance between the left atrium and the esophagus was positively correlated (r = 0.8, P <0.05). Conclusion: It is feasible to measure the distance between the left atrium and the esophagus under the Ensite3000 mapping system, which indirectly shows that the catheter ablation strategy of atrial fibrillation far away from the posterior wall of the left atrium or avoiding the posterior wall of the left atrium close to the esophagus is clinically feasible.