MDCT对保留二尖瓣全瓣心脏生物瓣膜替换术后心功能的评价

目的 研究多层螺旋CT(MDCT)对保留二尖瓣心脏生物瓣膜替换术后心功能的评价.方法 选择2012年5月到2014年2月到该院就诊的适合二尖瓣心脏生物瓣膜替换术的患者共35例,将其分为两组,A组术中保留二尖瓣全瓣及瓣下结构,B组术中不保留二尖瓣瓣下结构.术前,术后10 d行MDCT检查,评价左心室功能.结果 两组病例术前MDCT对比,A组和B组左心室舒张末期容积(EDV)、左心室收缩末期容积(ESV)、射血分数(EF)、每搏输出量(SV)比较差异无统计学意义(P＞0.05).A组术后10d MDCT的结果EDV、ESV、EF分别为(106.25±8.83)mL、(35.75±4.37)mL、(54.48士4.23)％,B组分别为(113.42±9.22)mL、(38.63±3.40)mL、(51.63±4.71)％,两组比较差异均有统计学意义(P＜0.05),而两组间SV比较差异无统计学意义(P＞0.05).结论 保留二尖瓣全瓣的心脏生物瓣膜替换术,技术安全可行,且有效地保护了心脏术后的左心室功能.

Cardiac function assessment after bioprosthetic valve replacement with mitral valve preservation by MDCT

Objective To investigate the assessment of multi-detector spiral CT on the cardiac function after bioprosthetic valve replacement with mitral valve preservation.Methods Thirty-five patients suitable for undergoing bioprosthetic mitral valve replacement in our hospital from May 2012 to February 2014 were randomly divided into 2 groups:group A(experimental group,intraoperative preservation of mitral valve and subvalvular structure during,n=16) and group B (control group,without intraoperative preservation of subvalvular structure of mitral valve,n=19).MDCT before operation and on postoperative 10 d was performed for evaluating the left ventricular function.Results In the comparison of preoperative MDCT,the end diastolic velocity(EDV),end systolic velocity(ESV),ejection fraction(EF) and stroke volume(SV) had no statistical difference between the group A and B.In MDCT results on postoperative 10 d,EDV,ESV and EF in the group A were 113.42±9.22)mL,(38.63±3.40)mL and (51.63±4.71) ％,which in the group B were(113.42 ± 9.22) mL,(38.63 ± 3.40) mL and (51.63 ± 4.71) ％ respectively,the difference was statistically significant(P＜0.05),but SV had no statistical difference between the two groups(P＞0.05).Conclusion The bioprosthetic valve replacement with mitral valve preservation is safe and feasible in technology,moreover effectively protects the postoperative left ventricular function.