Evaluation of strain indexes and prognosis of patients with cardiac amyloidosis with preserved LVEF by three-dimensional speckle tracking imaging

Objective To evaluate the patients with Cardiac amyloidosis (CA) and Hypertrophic cardiomyopathy (HCM) by using the strain indexes of three-dimensional speckle tracking imaging (3D-STI) technique, and to evaluate the prognosis. Methods A total of 32 patients with pathologically confirmed cardiac amyloidosis and 34 patients with hypertrophic cardiomyopathy and 16 normal controls were enrolled from the First Affiliated Hospital of Zhejiang University College of Medicine from June, 2013 to Januaiy, 2018.