Global and regional ejection fraction changes with CABG evaluated by stress radionuclide angiography

To evaluate coronary artery bypass surgery (CABG) effects on global and regional left ventricular function, the authors studied 19 coronary artery disease (CAD) patients with stress radionuclide angiography (SRNA), before and after CABG. Global and regional ejection fraction (EF) changes, with CABG both at rest and in stress, were analyzed. The results were compared with those for a reference group of 12 normal individuals. It is confirmed that, in general, CABG does not affect left-ventricular (LV) function at rest but improves LV performance at stress. However, in individual patients the rest EF may change.<
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