Quantitative assessment of right atrial function by strain and strain rate imaging in patients with heart failure.

摘要: OBJECTIVES We sought to evaluate the regional longitudinal strain/strain rate profiles in right atrial wall quantify function systolic heart failure patients. BACKGROUND According previous studies on deformational properties of left atrium, strain and rates represent reservoir early late diastolic show conduit booster functions, respectively. METHODS Thirty patients with a diagnosis (left ventricular ejection fraction < or = 35%) scheduled for catheterization were enrolled. Echocardiography was performed obtain deformation indices just before procedure. The control group consisted 32 healthy adults matched age sex. deformity obtained peak (RAS), (RASSR), (RAEDSR), (RALDSR). RESULTS significantly compromised versus normal subjects (RAS: 68.5 +/- 53.9 vs 189.3 61.2, P 0.000; RASSR: 2.9 1.9 vs. 5.3 1.5, 0.000).There significant correlation between RAS RASSR cardiac output r 0.5, 0.005; 0.003), index 0.6, 0.001; 0.001). CONCLUSION In light our findings, we conclude that diminished RA function, as assessed by imaging, plays critical role pathophysiological process