Utility of Serum Urea-to-Albumin Ratio in Predicting Length of Stay in Patients with Myocardial Infarction: A Retrospective Cohort Study

Introduction: This study aimed to assess the effectiveness of the Serum Urea-to-Albumin Ratio (UAR) as a predictor of prolonged Length of Stay (LOS) in patients admitted with Myocardial Infarction (MI).Materials and Methods: This retrospective study analyzed data from ۱۹۵ patients admitted with MI. LOS was recorded and categorized as Short Stay (≤۶ days) or long stay (>۶ days). Statistical analyses included comparative tests, correlation, linear and binary logistic regression, and Receiver Operating Characteristic (ROC) curve analysis. A p-value of <۰.۰۵ was considered statistically significant.Results: The mean age of patients was ۵۱ years, with ۶۷.۷% being male. UAR was significantly higher in the long stay group (median ۷) compared to the short stay group (median ۵.۴) (p<۰.۰۰۱). Spearman correlation showed a significant positive correlation between UAR and LOS (r=۰.۳۷, p<۰.۰۰۱). In binary logistic regression, UAR was a significant predictor of long stay (OR ۱.۲۰۷۷, ۹۵% CI ۱.۰۹۴۷-۱.۳۳۲۳, p<۰.۰۰۱). ROC analysis for UAR predicting long stay yielded an Area Under the Curve (AUC) of ۰.۶۶۴۸, with an optimal cut-off of ۶.۴۸۴۸ (Sensitivity ۵۵.۱۰%, Specificity ۷۲.۱۶%).Conclusions: The Serum UAR demonstrates a significant association with LOS in MI patients and can be a useful, easily calculated adjunct tool for early risk stratification of MI patients for prolonged LOS.

کلیدواژه ها:

Length of stay ، Myocardial infarction ، Prognostic Marker ، Risk stratification ، Serum Urea-to-Albumin Ratio