Frequency of Left Ventricular End-Diastolic Volume Mediated Declines in Ejection Fraction in Patients Receiving Potentially Cardiotoxic Cancer Treatment

摘要

We sought to determine the frequency by which decreases in left ventricular (LV) end-diastolic volume (LVEDV) with and without increases in end-systolic volume (LVESV) influenced early cancer treatment-associated declines in left ventricular ejection fraction (LVEF) or LV mass. One hundred and twelve consecutively recruited individuals (aged 52 ± 14 years) with cancer underwent blinded cardiovascular magnetic resonance (CMR) measures of LV volumes, mass, and LVEF before and 3 months after initiating potentially cardiotoxic chemotherapy (72 % of participants received anthracyclines). Twenty-six participants developed important declines in LVEF of >10% or to values <50% at 3 months, in whom 19% versus 60%, respectively, experienced their decline in LVEF due to isolated declines in LVEDV versus an increase in LVESV; participants who dropped their LVEF due to decreases in LVEDV lost more LV mass than those who dropped their LVEF due to an increase in LVESV (p=0.03). Nearly a fifth of individuals experience marked LVEF declines due to an isolated decline in LVEDV after initiating potentially cardiotoxic chemotherapy. Since reductions in intravascular volume (which could be treated by volume repletion) may account for LVEDV related declines in LVEF, these data indicate that LV volumes should be reviewed along with LVEF when acquiring imaging studies for cardiotoxicity during treatment for cancer.