Prognostic value of blood urea nitrogen to albumin ratio in prognosis of elderly patients with coronary heart disease after percutaneous coronary intervention
Objective:To analyze predictive value of blood urea nitrogen(BUN)/albumin(ALB)(B/A)ratio in prognosis of elderly patients with coronary heart disease after percutaneous coronary intervention(PCI).Methods:The clinical data of 98 elderly patients with coronary heart disease admitted to this hospital from January 2020 to December 2022 were retrospectively analyzed.All patients were followed up for 6 months after PCI.According to the occurrence of major adverse cardiovascular events(MACE),these patients were divided into poor prognosis group and good prognosis group.The levels of BUN and ALB as well as the B/A ratio after PCI treatment were compared between the two groups.The receiver operating characteristic(ROC)curve was used to analyze the predictive value of BUN and ALB levels as well as the B/A ratio on the poor prognosis of the elderly patients with coronary heart disease after PCI.Results:The incidence of poor prognosis in the 98 elderly patients with coronary heart disease after 6 months of PCI was 26.53%(26/98).The BUN level and the B/A ratio in the good prognosis group were significantly lower than those in the poor prognosis group,the ALB level was significantly higher than that in the poor prognosis group,and the differences were statistically significant(P<0.05).The ROC curve analysis showed that the area under the curve of the B/A ratio in the prediction of poor prognosis after PCI in the elderly patients with coronary heart disease was 0.921,which was higher than 0.852 and 0.734 of BUN and ALB levels,respectively.The cut-off value of B/A ratio in the prediction of poor prognosis was 0.48.Conclusions:The increase of BUN level,the decrease of ALB level and the increase of B/A ratio can lead to the increase of the risk of poor prognosis in the elderly patients with coronary heart disease after PCI.The value of B/A ratio in the prediction of poor prognosis of the patients is higher than those of single BUN detection and single ALB detection.