Variables Coronary collateral development p Poor n (%) Well n (%) Number of diseased vessels 1 vessel disease 2 vessel disease 3 vessel disease   7 (28%) 13 (52%) 5 (20%)   8 (29.6%) 12 (44.4%) 7 (25.9%)   0.834 Significant RCA disease 21 (84%) 16 (59.3%) 0.097 Significant LAD disease 14 (56%) 21 (77.8%) 0.169 Significant Cx disease 13 (52%) 16 (59.3%) 0.805 Total Gensini score 32 (24-42) 48 (42-84) <0.001

Table 2: Angiographic characteristics in patients with poor and well collaterals CAD: coronary artery disease; RCA: Right coronary artery; LAD: Left anterior descending artery; Cx: Circumflex artery.