Prognostic Value of the CALLY Index in Patients Undergoing Primary PCI

• ST-elevation myocardial infarction (STEMI) remains a leading cause of morbidity and mortality worldwide. Early risk stratification in patients undergoing primary percutaneous coronary intervention (PPCI) is crucial to predict adverse outcomes and optimize management.
• The C-reactive protein-albumin-lymphocyte (CALLY) index is an emerging biomarker combining inflammation, nutrition, and immune status. Previous studies have demonstrated associations between the CALLY index and long-term mortality in cardiovascular disease, elderly populations, and STEMI patients . However, most of these studies focus on long-term outcomes or utilize complex predictive models (e.g., machine learning), and there is limited research assessing the direct relationship between admission CALLY index and immediate procedural outcomes, such as PPCI success or short-term adverse events., Unlike previous studies that included retrospective data, large national databases, or machine learning prediction models, this study will focus on a short-term, real-time assessment of the CALLY index at admission and its immediate association with procedural outcomes and in-hospital adverse events

Inclusion criteria

Age ≥ 18 years

• Diagnosis of STEMI based on 4th universal definition of myocardial infarction
• Undergoing Primary PCI within guideline-recommended timeframes
• Provided informed consent to participate in the study

Exclusion criteria

• Active infection (as detected by baseline leukocytosis on admission), autoimmune or inflammatory disease affecting CRP, albumin, or lymphocyte counts
• Chronic liver disease or advanced malignancy
• Patients receiving immunosuppressive therapy
• Refusal to participate