The impact of the Naples prognostic score in long-term outcomes after percutaneous coronary intervention for chronic total occlusions

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BACKGROUND: Chronic total occlusions (CTOs) of coronary arteries present a significant challenge in cardiology, with long-term outcomes following percutaneous coronary intervention (PCI) for CTOs remaining variable and unpredictable. The Naples prognostic score (NPS), which incorporates markers of nutritional status and systemic inflammation, has shown potential in predicting outcomes in various cardiovascular settings. This study evaluates the NPS as a predictor of long-term outcomes after PCI for CTOs. METHODS: A retrospective analysis was conducted on 287 patients who underwent coronary angiography. Patients were categorized into non-CTO-PCI and CTO-PCI groups. Patients were further stratified based on survival status. Cox regression and Kaplan-Meier survival analyses were used to evaluate the association between NPS and long-term outcomes. RESULTS: The mean age of the study population was 63.5 ± 10.6 years, with 28.6% being female. The NPS was significantly higher in the CTO-PCI group compared to the non-CTO-PCI group ( P = 0.004) and was also elevated in the non-survival group ( P = 0.004). Multivariable Cox regression analysis identified NPS as an independent predictor of mortality ( P = 0.015). Kaplan-Meier analysis demonstrated significantly higher mortality in patients with an elevated NPS ( P = 0.009). CONCLUSION: The NPS is a valuable independent predictor of long-term mortality in patients undergoing CTO-PCI. Incorporating NPS into existing risk stratification models could improve predictive accuracy and guide individualized patient management. Further prospective studies are warranted to validate these findings and explore interventions targeting inflammation and nutrition in this high-risk population.

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