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JACC:阜外医院陆敏杰等发现扩张型心肌病患者多有脂肪沉积

2013-07-31 coffeecoffee dxy

特发性扩张型心肌病(DCM)是目前进行过心脏移植的年轻人心力衰竭最常见的原因,但人们对脂肪沉积在DCM中的临床价值了解甚少。阜外医院陆敏杰等人对此进行了研究,发现脂肪沉积现象在DCM患者中较为普遍,且与DCM诸多特征相关,研究结果近期发表于《美国心脏病学会杂志》。 研究利用水脂分离成像法,前瞻性探索了脂肪沉积在特发性扩张型心肌病(DCM)患者中的发生率,以及左心室(LV)脂肪沉积与心肌纤维化及心

特发性扩张型心肌病(DCM)是目前进行过心脏移植的年轻人心力衰竭最常见的原因,但人们对脂肪沉积在DCM中的临床价值了解甚少。阜外医院陆敏杰等人对此进行了研究,发现脂肪沉积现象在DCM患者中较为普遍,且与DCM诸多特征相关,研究结果近期发表于《美国心脏病学会杂志》。

研究利用水脂分离成像法,前瞻性探索了脂肪沉积在特发性扩张型心肌病(DCM)患者中的发生率,以及左心室(LV)脂肪沉积与心肌纤维化及心脏功能参数之间的联系。

研究共招募了124名DCM患者,并取得知情同意书。研究采用磁共振成像(MRI)扫描,包括功能性分析的多系列左室短轴MRI电影成像、水脂分离成像,以及对比剂延迟强化(LGE)成像,并按左室17节段分法对比LGE成像的瘢痕区域与脂肪沉积和纤维化位置。利用Pearson Correlation、Student t test和多元回归对左室整体功能参数、纤维化体积和脂肪沉积进行统计学比较。

DCM患者中有41.9%为LGE阳性,12.6%有脂肪沉积。脂肪沉积的患者左室舒张末期容积(LVEDV)指数,以及左室收缩末期容积(LVESV)指数较高,而左室射血分数(LVEF)较低。有心肌脂肪沉积的患者LGE体积较大,LGE占左室重量的比例也较高。脂肪沉积的体积与瘢痕体积、LVEF、LVEDV指数和LVESV指数相关。

该研究结果表明,脂肪沉积现象在DCM患者中较为常见,并与纤维化体积和左室功能等DCM特征相关。

Lu M, Zhao S, Jiang S, Yin G, Wang C, Zhang Y, Liu Q, Chen H, Ma N, Zhao T, Chen X, Huang J, Zou Y, Song L, He Z, An J, Renate J, Xue H, Shah S.Fat Deposition in Dilated Cardiomyopathy Assessed by CMR.JACC Cardiovasc Imaging. 2013 Jul 5. doi:pii: S1936-878X(13)00454-3. 10.1016/j.jcmg.2013.04.010. [Epub ahead of print]

PMID:
23850250

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    2014-05-09 lsj637
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    2013-09-23 hbwxf
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