A Chinese Scoring System for Predicting Successful Retrograde Collateral Traverse in Patients with Total Chronic Coronary Occlusion

Abstract

Background Retrograde approach technique has been challenging in percutaneous coronary interventional treatment of chronic total occlusion (CTO) coronary disease. The present study endeavors to determine a novel Chinese scoring system for predicting successful collateral channels traverse via retrograde approach. Methods The demographic characteristics and angiographic characteristics of 309 CTO patient were analyzed by univariate and multivariate analysisfor selecting potential predictors. And the nomogram was used to establish the scoring system. Then it was evaluated by the internal and external validation. Results The predictors of Age, Connections between collateral channels and recipient vessels, and Channel Tortuosity (ACT) were identified with multivariate analysis and employed to the ACT score system. With acceptable calibrations, the AUC of the scoring system and the external validation were 0.826 and 0.816 respectively. Based on score, the predictors were divided into three risk categories and it showed a consistent prediction power in the validation cohort. Conclusions The novel Chinese ACT score is a reliable tool for predicting successful retrograde collateral traverse.

Scoring system related to retrograde percutaneous coronary intervention for coronary chronic total occlusion

“…The objective of the Age, connections, and channel scoring system study [22] was to create a new Chinese scoring system for accurately predicting the successful CCs traverse via retrograde technique. The study included a total of 458 CCs in 309 CTO patients in a single center in China from June 2015 to December 2021.…”