Document Detail


Myocardial ultrasound tissue characterization of patients with primary aldosteronism.
MedLine Citation:
PMID:  23200178     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Primary aldosteronism (PA), an underdiagnosed cause of hypertension, is associated with more significant cardiac remodeling and myocardial fibrosis than is essential hypertension (EH). The aim of this study was to validate myocardial fibrosis and to evaluate factors associated with the degree of myocardial fibrosis in patients with PA. We prospectively analyzed 62 patients with PA (including 46 patients with aldosterone-producing adenoma and 16 with bilateral hyperplasia) between October 2006 and October 2010, and we enrolled 17 patients with EH as the control group. Echocardiography, including ultrasonic tissue characterization using cyclic variation of integrated backscatter (CVIBS), was performed in individuals in both groups. Among patients with PA, the diastolic blood pressures and plasma aldosterone concentrations were significantly higher than those of patients with EH. Moreover, the serum potassium levels and the plasma renin activities were significantly lower in patients with EH. As observed by echocardiography, patients with PA had greater interventricular septal thickness, greater left ventricular posterior wall thickness, and higher left ventricular mass indexes than did patients with EH. Patients with PA had significantly lower CVIBS values than patients with EH (7.1 ± 2.2 vs. 8.7 ± 1.5 dB; p = .005). In a correlation study that corrected for various clinical parameters, only log-transformed plasma renin activity values correlated significantly with CVIBS values. Ultrasonic tissue characterization with CVIBS is a useful tool for determining the extent of myocardial fibrosis. Patients with PA exhibit a more severe degree of myocardial fibrosis, as detected by CVIBS, than do patients with EH. Moreover, the severity of fibrosis, as detected by CVIBS, correlates with log-transformed plasma renin activity values.
Authors:
Hsiu-Hao Lee; Chi-Sheng Hung; Xue-Ming Wu; Vin-Cent Wu; Kao-Lang Liu; Shuo-Meng Wang; Lung-Chun Lin; Pau-Chung Chen; Yue-Leon Guo; Shih-Chieh Chueh; Yen-Hung Lin; Yi-Lwun Ho; Kwan-Dun Wu;
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ultrasound in medicine & biology     Volume:  39     ISSN:  1879-291X     ISO Abbreviation:  Ultrasound Med Biol     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-12-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410553     Medline TA:  Ultrasound Med Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  54-61     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Internal Medicine, Taipei City Hospital, Zhongxing Branch, Taipei, Taiwan; Institution of Occupational Medicine and Industrial Hygiene, National Taiwan University College of Public Health, Taipei, Taiwan.
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