Right ventricular dysfunction in patients with diffuse large B-cell lymphoma undergoing anthracycline-based chemotherapy: a 2D strain and 3D echocardiography study.

Abstract

To investigate whether 2D strain and 3D echocardiography could early identify the impaired right ventricular (RV) function after anthracycline exposure. Sixty-one patients with diffuse large B-cell lymphoma treated with anthracycline were studied. Echocardiography was conducted at baseline, after the third cycle of the chemotherapy, after the completion of the chemotherapy, and follow-up at 10months after the initiation of chemotherapy. RV global longitudinal strain (RV GLS) and RV free wall longitudinal strain (RV FWLS) were calculated using speckle tracking echocardiography. RV ejection fraction (RVEF) was analyzed by 3D echocardiography. RV systolic dysfunction was defined by ≥ 2 RV parameters below the threshold value, and cardiotoxicity was defined as a reduction in left ventricular EF > 10 to < 53%. After the third cycle of chemotherapy, only RV GLS was significantly decreased, while after the completion of the chemotherapy, RV GLS, RV FWLS, and RVEF were all significantly decreased compared with baseline measurements. At the end of follow-up, 9 patients (14.8%) were diagnosed with RV systolic dysfunction, and 16 patients (26.2%) had at least 1 abnormal RV function parameter. The proportion of RV systolic dysfunction was significantly higher in patients with cardiotoxicity than in patients without cardiotoxicity, yielding an odds ratio of 5.143. A percentage decrease in RV FWLS and RVEF were independent predictors of RV systolic dysfunction. Two-dimensional strain and 3D echocardiography are valuable methods for evaluating anthracycline-related impairment of RV function in DLBCL patients receiving chemotherapy. RV FWLS and RVEF are reliable predictors of RV systolic dysfunction.