• Postgrad Med J · Jun 2023

    Association of serum uric acid levels with cardiovascular and all-cause mortality in hypertensive patients in China: a cohort study.

    • Shu-Xian Zhang, Yu-Ling Yu, Song-Tao Tang, Kenneth Lo, Ying-Qing Feng, and Ji-Yan Chen.
    • Department of Cardiology, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China.
    • Postgrad Med J. 2023 Jun 30; 99 (1173): 708714708-714.

    PurposeThe present study aimed to assess the association of elevated serum uric acid (SUA) and hypouricemia with all-cause mortality and cardiovascular mortality in Chinese hypertensive patients.MethodsIn the present prospective cohort, 9325 hypertensive patients from Dongguan, China were enrolled from 2014 to 2018 for analysis. Participants were categorised by quintiles of SUA. The HRs and 95% CIs for the association between SUA, all-cause and cardiovascular mortality were evaluated using the multivariate Cox regression model. After adjusting for multiple confounders, restricted cubic spline analysis was conducted to demonstrate the shape of relationship.ResultsAfter a median follow-up of 4.18 years for 9325 participants, there were 409 (4.4%) and 151 (1.6%) reported cases of all-cause and cardiovascular mortality, respectively. By using the third quintile of SUA (6.68 mg/dL to <7.55 mg/dL for men, 5.63 mg/dL to <6.42 mg/dL for women) as reference, the highest quintiles of SUA were associated with an elevated risk of all cause (HR: 1.34, 95% CI 1.00 to 1.80) in the crude model, but the association was not significant after adjusting for multiple comparisons. The association between low SUA and mortality and the dose-response analysis on the non-linearity of SUA-mortality relationship were not statistically significant.ConclusionsAlthough the association between SUA levels, all-cause and cardiovascular disease mortality did not appear to be significant among Chinese hypertensive patients, the findings might be confounded by their medical conditions. Further studies are needed to verify the optimal SUA levels for hypertensive patients.© The Author(s) 2022. Published by Oxford University Press on behalf of Postgraduate Medical Journal. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

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