ALB and acute kidney injury: Multivariate Cox regression analysis based on model 2 revealed that, for 30-day mortality, aging, stroke history, malignant arrhythmias/cardiac syncope/cardiogenic shock attack, hyperuricemia, normal baseline renal function with AKI and impaired renal function with AKI were independent risk factors, while albumin level, aspirin therapy, β-blocker therapy and ACEI/ARB therapy were independent protective factors.