Association between hyperuricemia and hypertension in chronic kidney disease

Abstract

Objective: To investigate the relationship between hyperuricemia and hypertension in patients with chronic kidney disease (CKD). Methods: The demographic characteristics, blood pressure and biochemical indicators in 530 outpatients of CKD were analyzed in this study from Jan 2020 to Mar 2020 in the Nephrology Department of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine. Multivariate logistic regression analysis was used to evaluate the correlation between serum uric acid and hypertension in CKD patients. Results: The prevalence of hyperuricemia in CKD patients was 42.6%, and the prevalence of hypertension was 60.4%. In patients with CKD from stages 1 to 5, the prevalence of hypertension was 37.3%, 57.4%, 74.0%, 78.8%， 83.6% respectively, and the prevalence of hyperuricemia was 19.5%， 35.7%， 65.4%， 61.5%， 55.2% respectively. The prevalence of both hyperuricemia and hypertension among CKD 1-5 were significantly different. By comparison with the serum uric acid level in the first quartile (Q1，the multivariate-adjusted odds for hypertension in the Q2, Q3 and Q4 were 1.588, 1.368 and 2.542 times respectively. Among them, the risk of hypertension in the highest quartile group was 2.542 times as the risk in Q1. Conclusions: Among CKD patients, there is a significant correlation between hyperuricemia and hypertension. The risk of hypertension increases with the rise of serum uric acid level. More attention should be paid to CKD patients with asymptomatic hyperuricemia.

Keywords

• |chronic kidney disease|hyperuricemia|hypertension