扩张型心肌病中经热稀释法与磁共振成像对右心室容积和射血分数的比较评估
Comparative assessment of right ventricular volumes and ejection fraction by thermodilution and magnetic resonance imaging in dilated cardiomyopathy.
作者信息
Globits S, Pacher R, Frank H, Pacher B, Mayr H, Neuhold A, Glogar D
机构信息
Second Department of Internal Medicine, University of Vienna, Austria.
出版信息
Cardiology. 1995;86(1):67-72. doi: 10.1159/000176833.
Measurements of right ventricular (RV) ejection fraction (EF) and volumes using a new thermodilution technique were compared to serially performed magnetic resonance imaging (MRI) in 21 patients with dilated cardiomyopathy. For RVEF (%) and RV volume indices (ml/m2) the following correlation coefficients were found: RVEF r = 0.82; end-diastolic volume index (EDVI) r = 0.45; end-systolic volume index (ESVI) r = 0.65; stroke volume index (SVI) r = 0.61; all p < 0.05. However, RVEF by thermodilution was significantly lower (RVEF thermo = 31 +/- 14 vs. RVEF MRI = 50 +/- 14, p < 0.01) and RV EDV and ESVI were significantly higher compared to MRI, while SVI showed no significant difference. Exclusion of patients with atrial fibrillation (n = 8) improved the correlations (RVEF r = 0.94, EDVI r = 0.77, ESVI r = 0.87, SVI r = 0.65, all p < 0.05), but did not reduce the mean difference between both methods.
采用一种新的热稀释技术测量了21例扩张型心肌病患者的右心室（RV）射血分数（EF）和容积，并与连续进行的磁共振成像（MRI）结果进行了比较。对于右心室射血分数（%）和右心室容积指数（ml/m2），得到了以下相关系数：右心室射血分数r = 0.82；舒张末期容积指数（EDVI）r = 0.45；收缩末期容积指数（ESVI）r = 0.65；每搏输出量指数（SVI）r = 0.61；所有p均<0.05。然而，热稀释法测得的右心室射血分数显著较低（热稀释法测得的右心室射血分数=31±14，而磁共振成像测得的右心室射血分数=50±14，p<0.01），与磁共振成像相比，右心室舒张末期容积和收缩末期容积显著更高，而每搏输出量指数无显著差异。排除心房颤动患者（n = 8）后相关性得到改善（右心室射血分数r = 0.94，舒张末期容积指数r = 0.77，收缩末期容积指数r = 0.87，每搏输出量指数r = 0.65，所有p均<0.05），但未缩小两种方法之间的平均差异。
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