in 18 patients in group 1 , sigma st ( total degrees of st segment depression in leads v1 , v2 , v3 , and v4 in the acute stage ) was significantly greater in 11 patients with lad lesion than in seven without ( p less than 0.05 ) , and sigma st greater than five mm was observed in 12 of 13 patients who had additional anterior wall ischemia and posterolateral wall infarction on stress thallium-201 scintigraphy ( p less than 0.05 ) .
C0022116
ischemia
C0021308
infarction