patients with collateral filling ( collateral scores 2 and 3 ) of the distal tca vessel had a significantly decreased incidence of angina and diagnostic ischemic st-segment changes ( 42 % and 15 % respectively ) as compared to patients without collateral filling ( collateral scores 0 and 1 ) ( 83 % and 74 % ) ( p less than .001 ) .
C0002996
tca
C0005847
vessel