The univariate analyses revealed that albumin (OR=1.114, 95%CI: 1.013-1.234, P=0.032), blood urea nitrogen (OR= 1.089, 95%CI: 1.030-1.556, P=0.003), Prothrombin time (OR= 0.643, 95%CI: 0.417-0.975, P=0.040) and preoperative Serum kalium (OR= 8.281, 95%CI: 4.139-18.728, P<0.001) were significantly associated with postoperative severe hyperkalemia (Table 3). The gene discussed is ALB; the disease is Hyperkalemia.