Teng RL, Liu M, Sun BC, et al. - Findings demonstrate a predicting value of the CatLet score (Coronary Artery Tree description and Lesion EvaluaTion angiographic scoring system) for clinical outcome in acute myocardial infarction patients. Improvement in this predicting value can be achieved via a combination with age, serum creatinine, and left ventricular ejection fraction (LVEF).

• According to preliminary study, CatLet score better predicted clinical results when compared with the SYNTAX score.

• This investigation was a post hoc analysis of the CatLet score validation trial.

• Occurrence of 64 major adverse cardiac or cerebrovascular events (MACCEs) (20.8%), 56 all-cause deaths (18.2%), and 47 cardiac deaths (15.2%) was revealed over 1,185 person-years.

• Significant increase in the Harrell’s C-index by 0.0967 in MACCEs, by 0.1354 in all-cause deaths, and by 0.1187 in cardiac deaths was achieved as a result of addition of the 3 clinical variables (age, serum creatinine, and LVEF) to the stand-alone CatLet score.

• A significantly refined risk stratification, especially at the intermediate-risk category, was achieved relative to the stand-alone CatLet score.