[Factors related to the poor coronary collateral circulation in patients with coronary artery disease].

Objective: To explore the factors related to poor coronary collateral circulation (CCC) and the synergy effects among various factors in patients with coronary artery disease (CAD).

Methods: A total of 180 patients with coronary angiography confirmed CAD (at least one major coronary artery stenosis equal to or greater than 95%) were included in this study. Coronary collateral circulation was graded according to the Rentrop scoring system.