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Research Article: Association between the C-reactive protein-triglyceride-glucose index and major adverse cardiovascular events in patients undergoing percutaneous coronary intervention

Date Published: 2026-05-29

Abstract:
The interaction between inflammation and insulin resistance is a key driver of atherosclerosis. However, the combined effect of C-reactive protein (CRP) and triglyceride-glucose index (TyG) on the risk of major adverse cardiovascular events (MACEs) remains unclear. This study aims to evaluate the association between the C-reactive protein-triglyceride-glucose index (CTI) and major adverse cardiovascular events following percutaneous coronary intervention (PCI). Retrospective data from 2,610 patients who underwent PCI were collected. The association between the CTI and the risk of adverse outcomes was evaluated using survival analysis, Cox regression, restricted cubic splines (RCS), time-dependent receiver operating characteristic (ROC) curves, subgroup analysis, and sensitivity analysis. During the follow-up period, 459 participants experienced MACEs. The incidence of adverse outcomes differed significantly across CTI levels, and Cox regression analysis indicated that CTI is an independent predictor. RCS analysis showed a non-linear relationship between CTI and the primary endpoint, and a linear relationship with the secondary endpoint. CTI demonstrated good predictive ability for adverse outcomes, and the results were validated by subgroup and sensitivity analyses, confirming their stability. Pre-PCI CTI levels are significantly associated with adverse outcome.

Introduction:
The interaction between inflammation and insulin resistance is a key driver of atherosclerosis. However, the combined effect of C-reactive protein (CRP) and triglyceride-glucose index (TyG) on the risk of major adverse cardiovascular events (MACEs) remains unclear. This study aims to evaluate the association between the C-reactive protein-triglyceride-glucose index (CTI) and major adverse cardiovascular events following percutaneous coronary intervention (PCI).

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