TEE Observation of LAA Stunning after Conversion of Non-Valvular Atrial Fibrillation<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

肖竹影　吴长君　薛莉

哈尔滨医科大学第一临床医院超声科，黑龙江 哈尔滨  150001；

哈尔滨医科大学第三临床医院影像科

XIAO Zhu-ying, WU Chang–jun, XUE Li

Ultrasounic Department ,First Clinical College of Harbin Medical University ,Harbin 150001,China

Abstract

Objective：Transesophageal echocardiographic (TEE) observation of left atrial appendage (LAA) stunning after conversion of non-valvular atrial fibrillation.

Methods：In 17 cases of non-valvular atrial fibrillation, multiplanar TEE was used to measure post-conversion blood flow frequency spectrum; LAA peak evacuation velocity (LAA-PEV) before conversion ,24h and 1 week after conversion ,and peri-conversion left atrial spontaneous echo contrast (SEC).

Results：① LAA blood flow frequency spectrum became of sinus rhythm model after conversion .② LAA-PEV was66.4±12.5cm/s1week  after conversion ,with the latter being basically appeared in 3of 10 after conversion.

Conclusion：LAA was found to have stunning after conversion of atrial fibrillation ,and to restore normal function 1 week after conversion in this series of cased .

Key words：TEE; Atrial fibrillation ; Electrical conversion; Left atrial appendage function