ALB and Hyperkalemia: The fully adjusted Model 3 identified four independent predictors: higher Killip class III/IV (OR = 2.99, 95% CI 1.61–5.56), elevated neutrophil percentage (OR = 1.05, 95% CI 1.02–1.08), hyperkalemia (K+: OR = 1.70, 95% CI 1.08–2.70), and lower serum albumin (ALB: OR = 0.92, 95% CI 0.87–0.97).