左心房容积指数及应变评价二尖瓣成形术后左心房逆向重构

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Abstract Objective: To investigate the left atrial reverse remodeling in patients with mitral valve prolapse(MVP) after mitral valve plasty with left atrial volume index and strain parameters using Simpson’s method and two-dimensional speckle tracking echocardiography(2D-STE). Methods: Twenty-five patients in sinus rhythm with MVP were classified into two groups according to the diameter of left atrium(LAD). LAD≤45 mm was defined as group Ⅰ(n=10) and LAD＞45 mm was defined as group Ⅱ(n=15). These patients undertook echocardiography respectively 3 days before, 2 weeks and 3 months after the surgery. Maximal left atrial volume(LAVmax), minimal left atrial volume(LAVmin), precontraction left atrail volume(LAVpreA), percentage change in LAVmax and left atrial volume indexed to body surface area(left atrial volume index, LAVI) were measured using Simpson’s method. Furthermore, peak atrial longitudinal strain(PALS), atrial longitudinal strain during early diastole(ALSE), and peak atrial contraction strain(PACS) were assessed using 2D-STE. Twenty healthy controls were recruited concurrently. Results: LAVmax, LAVpreA and LAVmin increased, while PALS, ALSE and PACS decreased in patients with MVP. LAVmax, LAVpreA, LAVmin decreased 2 weeks and 3 months after mitral valvuloplasty, while PALS, ALSE and PACS decreased 2 weeks after operation and increased 3 months after operation. Percentage change in LAVmax showed linear correlation with LAVI(r=0.46, P＜0.05), PALS(r=0.49, P＜0.05) and PACS(r=0.43, P＜0.05). Conclusion: LAVI and left atrial strain were correlated well with left atrial reverse remodeling after mitral valve plasty.

Key words： Atrial function, left Echocardiography, Doppler, color

Received: 16 March 2017

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	Articles by authors
	JIAO Xiao-fang
	CHEN Xin
	ZHANG Ting-ting
	ZHANG Jing
	ZHANG Yi
	YANG Jun

Cite this article:

JIAO Xiao-fang,CHEN Xin,ZHANG Ting-ting, et al. Assessment of left atrial reverse remodeling after mitral valve plasty by left atrial volume index and strain[J]. JOURNAL OF CHINA MEDICAL IMAGING, 2018, 29(1): 14-17.

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http://www.jccmi.com.cn/EN/ OR http://www.jccmi.com.cn/EN/Y2018/V29/I1/14

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