阜外学者:应用超声新技术可评价肥厚心肌病手术效果

2018-03-05 xujing 中国循环杂志

阜外医院王浩、王婧金等应用超声心动图分层应变技术分析发现,肥厚型梗阻性心肌病患者在外科改良扩大Morrow术后,左心室游离壁发生逆重构。


阜外医院王浩、王婧金等应用超声心动图分层应变技术分析发现,肥厚型梗阻性心肌病患者在外科改良扩大Morrow术后,左心室游离壁发生逆重构。
 
超声心动图分层应变技术发现,左心室游离壁的三层心肌均发生逆重构。
 
研究者指出,超声心动图分层应变技术是一项新技术,可分析左心室心内膜下心肌、中层心肌和心外膜下心肌的应变。

不同于既往的斑点追踪技术,其优势主要有:可分层分析心肌应变,可手动调整追踪边界,可完整包裹室壁,更适合非对称性肥厚的肥厚型梗阻性心肌病。
 
本研究中,超声心动图测量的术后左心室整体质量的减少大于手术切除室间隔的质量,此外,左心室前壁、侧壁、后壁和下壁厚度较术前变薄,这些节段手术并未切除,说明左心室游离壁术后的逆重构。
 
研究者发现,左心室流出道压差缓解越好,增厚左心室游离壁节段数越小、年龄较大的患者术后逆重构较好。
 
研究入选成功接受改良扩大Morrow 术式的HOCM肥厚型梗阻性心肌病者60 例,同期选取健康人40 例作为正常对照。左心室游离壁厚度≥ 15 mm 的节段定义为增厚左心室游离壁节段。

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    2018-03-07 huagfeg
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