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PLoS By Category | Recent PLoS Articles
Nephrology - Radiology and Medical Imaging

Abnormally Low and High Ankle-Brachial Indices Are Independently Associated with Increased Left Ventricular Mass Index in Chronic Kidney Disease
Published: Wednesday, September 05, 2012
Author: Ho-Ming Su et al.

by Ho-Ming Su, Tsung-Hsien Lin, Po-Chao Hsu, Chun-Yuan Chu, Wen-Hsien Lee, Szu-Chia Chen, Chee-Siong Lee, Wen-Chol Voon, Wen-Ter Lai, Sheng-Hsiung Sheu

Abnormally low and high ankle-brachial indices (ABIs) are associated with high cardiovascular morbidity and mortality in patients with chronic kidney disease (CKD), but the mechanisms responsible for the association are not fully known. This study is designed to assess whether there is a significant correlation between abnormal ABI and echocariographic parameters in patients with CKD stages 3–5. A total of 684 pre-dialysis CKD patients were included in the study. The ABI was measured using an ABI-form device. Patients were classified into ABI <0.9, =0.9 to <1.3, and =1.3. Clinical and echocariographic parameters were compared and analyzed. Compared with patients with ABI of =0.9 to <1.3, the values of left ventricular mass index (LVMI) were higher in patients with ABI <0.9 and ABI =1.3 (P=0.004). After the multivariate analysis, patients with ABI <0.9 (ß?=?0.099, P?=?0.004) and ABI =1.3 (ß?=?0.143, P<0.001) were independently associated with increased LVMI. Besides, increased LVMI (odds ratio, 1.017; 95% confidence interval, 1.002 to 1.033; P?=?0.031) was also significantly associated with ABI <0.9 or ABI =1.3. Our study in patients of CKD stages 3–5 demonstrated abnormally low and high ABIs were positively associated with LVMI. Future studies are required to determine whether increased LVMI is a causal intermediary between abnormal ABI and adverse cardiovascular outcomes in CKD.
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