the cardiotoxic effect of doxorubicin was evaluated by history and physical examination and by the decline in resting ventricular ejection fraction ( lvef ) as determined by gated pool radionuclide angiography with technetium 99m ( 99mtc ) and by the decline in the height of the qrs complexes in the standard leads of the echocardiogram ( ecg ) .
C0220825
evaluated
C0031809
physical examination