心肌性能指数与心脏磁共振显像在评价大动脉转位患者系统性右室功能的比较

作     者：Salehian O. Schwerzmann M. Merchant N. J. Therrien 刘豫 

作者机构：Sir M.B. Davis Jewish Gen. Hospital 3755 Cote Ste. Catherine Montreal Que. H3T 1E2 Canada Dr. 

出 版 物：《世界核心医学期刊文摘（心脏病学分册）》 (Digest of the World Core Medical Journals(Cardiology))

年 卷 期：2005年第1卷第4期

页      面：48-48页

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 10[医学] 

主　　题：磁共振显像 大动脉转位 右室功能 性能指数 金指标 射血分数 超声评价 负相关 

摘      要：Background -Assessment of systemic right ventricular (RV)-function is a key point in the follow-up of patients with transposition of the great arteries (TG A). Current echocardiographic assessment of RV function is at best an estimate, and cardiac magnetic resonance (CMR) is considered the gold standard. However, t his technique is expensive, has limited availability, and requires significant e xpertise to acquire and interpret the images. The myocardial performance index ( MPI)-has recently been studied for assessment of pulmonary RV function and show s promise as a simple yet powerful tool for assessing patients with RV dysfuncti on of various origins. We set out to compare MPI and CMR assessment of systemic RV function in patients with TGA. Methods and Results -Data from patients with TGA (11 with congenitally corrected TGA, 18 with surgically corrected TGA) who h ad CMR within 6 months of their echocardiogram were reviewed. The average system ic RV ejection fraction (RVEF)byCMR was 39.4±11.4%, and the systemic RVMPI for this group was 0.56±0.21. There was a strong negative correlation between the systemic RVMPI and systemic RVEF by CMR (r=-0.82, P 0.01). The systemic RVEF c an be estimated from this formula: RVEF=65%-(45.2XMPI). Conclusions -MPI can be used in patients with systemic RVs to assess global function andtoestimatean EF with good accuracy.