CHA2DS2-VASc Score, Fibrinogen, and Neutrophil to Lymphocyte Ratio as Predictors of In-Stent Restenosis in Patients with Severe Kidney Disease

Objective: This study examined the relationship between CHA2DS2-VASc score, fibrinogen (FIB), and neutrophil-to-lymphocyte ratio (NLR) with in-stent restenosis (ISR) in patients with severe kidney disease (SKD). Methods: Between January 2017 and January 2022, patients with SKD who underwent coronary stent implantation at the Second Hospital of Tianjin Medical University were retrospectively analyzed. According to whether ISR occurred within 2 years of postoperative follow-up, 164 patients were categorized into the ISR group (n = 62) and the non-ISR group (n = 102). According to the Modification of Diet in Renal Disease (MDRD) formula, SKD is defined as an estimated glomerular filtration rate (eGFR) less than 30 mL/(min·1.73 m2). Angiographic ISR was defined as a stented coronary artery segment with more than 50% constriction during the follow-up angiography. Relevant clinical data and laboratory parameters were obtained from the hospital's medical records. Results: In total, 164 patients were included (mean age: 67.1 [10.2] years, 65.2% men), grouped into 62 patients with ISR and 102 patients without. A significant difference was found in the age, previous strokes, congestive heart failure (CHF), NLR, platelet-to-lymphocyte ratio (PLR), fibrinogen, CHA2DS2-VASc score, and risk classification of CHA2DS2-VASc score of patients in the ISR group as compared to those in the non-ISR group. In a multivariable logistic regression analysis, the CHA2DS2-VASc score, fibrinogen, and NLR were identified as independent predictors of ISR. The analysis of the receiver operating characteristic (ROC) curve revealed that the area under the curve (AUC) value was 0.714 (95% confidence interval (CI): 0.634–0.793) for the CHA2DS2-VASc score and 0.652 (95% CI: 0.565–0.739) for FIB, 0.707 (95% CI: 0.627–0.788) for NLR, and 0.797 (95% CI: 0.725–0.868) for the combination of CHA2DS2-VASc score, FIB and NLR. Conclusions: The combination of CHA2DS2-VASc score, FIB, and NLR can more accurately predict the occurrence of ISR in SKD patients.