OCC 2022:代谢正常肥胖者亚临床心脏结构,功能和组织学改变研究

2022-05-25 梅斯医学整理 梅斯医学整理

尽管传统收缩功能指标LVEF在正常范围之内,MHO患者存在亚临床的心脏重构,左室收缩功能损害及心肌纤维化改变。早期识别心脏亚临床损伤有助于MHO人群心衰的预防和早期干预。

代谢正常的肥胖(MHO)是指仅有体重指数(BMI)增加,但不合并代谢异常的肥胖者。既往研究显示,MHO者发生血管事件的危险性同非肥胖者相比无明显增加,然而MHO患者是否合并亚临床的心脏组织学和功能学损害尚不明确。

来自上海交通大学医学院附属仁济医院心内科赵航教授团队,对30名既往无冠心病、心衰病史,且心脏超声检查未提示收缩功能障碍(左室射血分数LVEF大于50%)的MHO患者(定义为BMI大于25kg/m2,且不合并超过一项代谢异常(包括高血压、高甘油三酯血症、高胆固醇血症及空腹糖耐量异常)),以及30名健康正常对照者(BMI小于25kg/m2)。

应用心脏磁共振(CMR)测量研究者心脏容积,应用组织追踪显像测量左室收缩期峰值长轴应变(GLS),应用组织特征现象测量心肌纤维化指标细胞外容积(ECV)并比较两组间差异。

结果显示,MHO患者左室舒张末容积(LVEDV)及收缩末容积(LVESV)较正常对照组增大,但LVEF同正常对照组相比无明显下降。

 

组织追踪显像显示,与对照组相比,MHO患者GLS绝对值降低。MHO患者心肌ECV较健康对照组先住升高。

总之,尽管传统收缩功能指标LVEF在正常范围之内,MHO患者存在亚临床的心脏重构,左室收缩功能损害及心肌纤维化改变。早期识别心脏亚临床损伤有助于MHO人群心衰的预防和早期干预。

资料来源:2022 16届东方心脏病学会议

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    2022-10-08 chg121
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    2022-05-27 zhaojie88
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    2022-05-25 jingjing

    大家一般关心疾病,但是亚临床更重要,这是疾病防控方向的前移,各类疾病都是这样。如亚临床甲减,亚临床心肌损伤,亚临床心衰等

    0

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