LVEF blev evalueret hos alle patienter (vha. ekkokardiogram eller MUGA), før initiering af behandling med lapatinib for at sikre, at baseline- LVEF lå inden for institutionens normale grænser.
LVEF was evaluated in all patients (using echocardiogram or MUGA) prior to initiation of treatment with lapatinib to ensure baseline LVEF was within the institutions normal limits.