Longitudinal changes of right ventricular deformation mechanics during trastuzumab therapy in breast cancer patients

European Journal of Heart Failure
Kalliopi KeramidaPetros Nihoyannopoulos

Abstract

Trastuzumab improves dramatically the prognosis of HER2-positive breast cancer patients, but it may lead to cardiotoxicity with left ventricular (LV) systolic dysfunction. Its effects on right ventricular (RV) function have not however been elucidated. We sought to assess LV and RV deformation mechanics during treatment with trastuzumab in breast cancer patients. We studied 101 consecutive women (mean age 54.3 ± 11.4 years) receiving trastuzumab for 12 months; 62 of them (61.4%) had previously received anthracyclines and 26 (25.7%) were receiving taxanes concurrently with trastuzumab. Comprehensive two-dimensional echocardiography with speckle tracking imaging of LV and RV global longitudinal strain (GLS) and RV free wall longitudinal strain (FWLS) analyses were performed at baseline and every 3 months up to treatment completion. Cardiotoxicity was defined as a decrease of baseline LV ejection fraction > 10 percentage units to a value < 50%. At 3 months, only LV GLS was significantly reduced (-19.5 ± 2.7 to -18.7 ± 2.8, P = 0.0410), while at 6 months, LV GLS, RV GLS and RV FWLS had significantly declined reaching their lowest values (-17.9 ± 6.1, P = 0.002, -19.6 ± 5.2, P = 0.003 and -19.7 ± 5.6, P = 0.004, respectively). Ten w...Continue Reading

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Apr 11, 2019·European Journal of Heart Failure·Marco Metra
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