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This article is the author's final published version in BMC Cardiovascular Disorders, Volume 23, 2023, Article number 380.

The published version is available at Copyright © The Author(s) 2023.


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 univariable and multivariable analysis for 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 univariable and multivariable analysis and employed to the ACT score system. With acceptable calibrations, the area under curve 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.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

12872_2023_3405_MOESM1_ESM.docx (20 kB)
Table. S1. Baseline collateral channel demographic characteristics.

12872_2023_3405_MOESM2_ESM.docx (24 kB)
Table S2. The demographic baseline of patients between training cohort and validation cohort.

12872_2023_3405_MOESM3_ESM.docx (16 kB)
Table S3. The complication of retrograde CTO-PCI in septal and epicardial collateral channels.

ACT scoring system software.exe (24 kB)
ACT scoring system software.

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