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Uric Acid levels and atrial fibrillation in hypertensive patients.
MedLine Citation:
PMID:  21498925     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Objective Uric acid (UA) is a cardiovascular risk marker associated with oxidative stress and inflammation. Recently, atrial fibrillation (AF) has been associated with inflammation and oxidative stress. The objective of this observational study was to investigate the association between UA levels and AF in hypertensive patients. Methods Consecutive patients with hypertension were screened. We excluded subjects with coronary artery disease, congestive heart failure, diabetes, valvular heart disease, congenital heart disease, cardiomyopathy, renal failure, inflammatory conditions, thyroid dysfunction, respiratory diseases, and those who were taking drugs that affect UA metabolism (apart from diuretics). The final study population consisted of 451 patients. Fifty of them (11%) had AF (paroxysmal: 38; persistent: 8; permanent: 4). Demographic, clinical, laboratory, and echocardiographic characteristics were carefully recorded. Results After univariate analysis, age, duration of hypertension, serum creatinine, serum UA, left atrial diameter (LAD), interventricular septum thickness, and left ventricular posterior wall thickness were significantly increased in patients with AF compared with non-AF patients, while the estimated glomerular filtration (eGFR) level was much lower in patients with AF than in those without AF. After multivariate logistic regression analysis, the independent predictors of AF were UA (OR: 1.008; 95% CI: 1.003-1.013, p=0.002) and LAD (OR: 1.160; 95% CI: 1.068-1.260; p<0.001). Conclusion We demonstrated an independent association between increased serum UA levels and AF in hypertensive patients. Undoubtedly, larger studies in different populations should further examine this potential association as well as the underlying pathophysiological mechanisms.
Authors:
Tong Liu; Xiaowei Zhang; Panagiotis Korantzopoulos; Shaohua Wang; Guangping Li
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Publication Detail:
Type:  Journal Article     Date:  2011-04-15
Journal Detail:
Title:  Internal medicine (Tokyo, Japan)     Volume:  50     ISSN:  1349-7235     ISO Abbreviation:  Intern. Med.     Publication Date:  2011  
Date Detail:
Created Date:  2011-04-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9204241     Medline TA:  Intern Med     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  799-803     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, People's Republic of China.
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