[A clinical study of the left ventricular wall motion after coronary artery bypass grafting using right gastroepiploic artery].
From 1989 to 1993 we performed coronary artery bypass grafting (CABG) using only arterial grafts in 135 cases. Both pre- and post-operative left ventriculography (LV graphy) were evaluated in 115 cases (282 branches). In accordance with the American Heart Association (AHA) classification, the left ventricular (LV) wall was divided into seven segments and the LV regional wall motion was assessed as per five grade. The rate of improvement (%) was defined as follows: (number that showed improvement of regional LV wall motion on post-operative LVgraphy/number that showed decreased regional LV wall motion on pre-operative LVgraphy) x 100. Examination was made separately regarding cases of ischemia (193 branches) and infarction (89 branches). For ischemic cases, the rate of improvement using left internal thoracic artery (LITA), right internal thoracic artery (RITA) and right gastroepiploic artery (RGEA) was 55.0% (11/20), 63.2% (12/19) and 75.0% (12/16) respectively. For infarction cases, the rate of improvement using LITA, RITA and RGEA was 42.1% (8/19), 55.6% (5/9) and 52.9% (18/34) respectively. Among these three groups no significant differences were noted. As a result, RGEA is thought to have usefulness equivalent to LITA and RITA.
Hayashi
S
S
Department of Cardiovascular Surgery, Hiroshima General Hospital, Japan.
Kawaue
Y
Y
D001158:Arteries / Q000637:transplantation; D001026:Coronary Artery Bypass / Q000379:methods; D006801:Humans; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000503:physiopathology / Q000601:surgery; D016277:Ventricular Function, Left