摘要
目的：探讨实时三维超声心动图（RT3DE）评价二尖瓣瓣环钙化（MAC）患者左房功能。方法：MAC患者41例，按照二尖瓣钙化严重程度将其分为G1：轻度，G2：中～重度。健康对照组30例，利用实时三维超声心动图获取左房容积参数，左房最大容积（Vmax）、最小容积（Vmin）、收缩前容积（Vpre A），计算左房总射血容积（TSV）、左心房排空分数（LAEF）、左房主动射血容积（ASV）、左房主动排空分数（AEF）、左房被动射血容积（PSV）、左房被动排空分数（PEF）、左心房扩长指数（EI）。结果：①病例组与对照组相比较，左房容积参数Vmax，Vmin，VpreA显著升高，TSV，LAEF，ASV，AEF，EI显著减低，差异具有统计学意义（P＜0.05），PSV，PEF差异没有统计学意义（P＞0.05）。②病例组G1与G2组相比较，左房容积参数Vmax，Vmin，VpreA显著升高，TSV，LAEF，ASV，AEF，EI显著减低，差异具有统计学意义（P＜0.05），PSV，PEF差异没有统计学意义（P＞0.05）。结论：MAC患者左房容积增加，左房主动射血功能减低，顺应性减低，通道功能无明显改变，RT3DE能反映MAC患者左房功能变化，敏感准确的评价左房功能。
Abstract
Objective: To evaluate left atrial function by real-time three-dimensional echocardiography(RT3DE) in patients with mitral annular calcification. Methods: Forty-one patients with MAC were divided into two groups according to the severity of MAC: G1, patients with mild MAC; G2, patients with moderate to severe MAC. 30 healthy persons served as control group. RT3DE was used to obtain the left atrial volume parameters, including LA maximum volume(Vmax), LA minimum volume(Vmin), and pre atrial contraction volume(VpreA). LA total stroke volume(TSV), LA total emptying fraction (LAEF), LA active stroke volume(ASV), LA active emptying fraction(AEF), LA passive stroke volume(PSV), LA passive emptying fraction(PEF), LA expansion index(EI) were calculated. Results: ①Compared with the control group, Vmax, Vmin and VpreA were markedly increased(P<0.05), TSV, lAEF, ASV, AEF and EI were markedly decreased(P<0.05), PSV and PEF were not markedly changed(P>0.05).②Compared with group G2, Vmax, Vmin and VpreA were markedly increased(P<0.05), TSV, lAEF, ASV, AEF and EI were markedly decreased(P<0.05), PSV and PEF were not markedly changed(P>0.05). Conclusion: RT3DE showed that left atrial volume was increased, left atrial active ejection function was decreased, the compliance was decreased, and the function of the channel was not significantly changed. RT3DE can reflect changes of left atrial function in patients with MAC, and may be sensitive and accurate to evaluate left atrial function.
关键词
二尖瓣 /
心房功能 /
左 /
超声心动描记术 /
三维
Key words
Mitral valve /
Atrial function /
left /
Echocardiography /
three dimensional
张 娜;高 林;齐锦蔚.
三维超声心动图对老年人二尖瓣环钙化患者左房功能的研究[J]. 中国临床医学影像杂志. 2015, 26(9): 638-641
ZHANG Na;GAO Lin;QI Jin-wei.
Evaluation of left atrial function by three-dimensional echocardiography in patients with mitral annular calcification[J]. Journal of China Clinic Medical Imaging. 2015, 26(9): 638-641
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