Table 2

Coronary angiographic and collateral flow data

Sufficient collaterals Insufficient collaterals p Value
Number of vessels diseased1.7 (0.7)1.7 (0.6)NS
Diameter stenosis before PTCA85 (7)%79 (10)%0.04
Coronary artery undergoing PTCA
Site of PTCA
 Proximal third518NS
 Middle third (%)75NS
 Distal third514NS
Angina pectoris during PTCA4260.001
Angiographic collateral score before PTCA1.0 (0.6)0.6 (0.6)0.03
Angiographic collateral score during PTCA1.1 (1.2) (n=13)0.6 (0.7) (n=19)0.19
Collateral flow index0.28 (0.09)0.12 (0.07)< 0.0001
Contrast washout time (heart beats)8.0 (2.9)17.5 (6.7)< 0.0001
Heart rate (beats/min)74 (12)70 (9.5)NS
LV ejection fraction65 (14)%67 (10)%NS
Ioversol as contrast medium1027NS
Ioxaglate as contrast medium79NS
  • Values are mean (SD) or n.

  • LAD, left anterior descending coronary artery; LCx, left circumflex coronary artery; LV, left ventricular; PTCA, percutaneus transluminal coronary angioplasty; RCA, right coronary artery; sufficient collaterals, no intracoronary or surface lead ECG ST segment shift (> 1 mm) during PTCA.