Multivariate Cox regression analysis based on model 1 revealed that, for 30-day mortality, aging, stroke history, malignant arrhythmias/cardiac syncope/cardiogenic shock attack, hyperuricemia and AKI severity were independent risk factors, while albumin level, aspirin therapy, β-blocker therapy and ACEI/ARB therapy were independent protective factors. The gene discussed is ALB; the disease is acute kidney injury.