Three-Year Longitudinal Clinical Trial of Arterial Function

Titel

Three-year longitudinal clinical trial of arterial function assessed by a oscillometric non-invasive method in comparison with carotid sclerosis and transferrin kidney-transplanted patients.


Autoren-Information

Kovács D, Lőcsey L, Laczik R, Szabó L, Zsom L, Kabai K, Fedor R, Nemes B, Asztalos L, Soltész P.

Abstract

Chronic kidney disease remains one of the main risk factors of cardiovascular disease. However, patients with kidney transplantation have better life expectancy and better quality of life compared with patients on dialysis. In patients with a well-functioning graft, the main cause of death is cardiovascular in origin. Metabolic pathways have complex effects on arterial function that can be monitored by conventional ultrasonography and with the assessment of arterial stiffness by oscillometric non-invasive technique. Forty-one primer cadaver kidney-transplanted patient were involved in a 3-year longitudinal clinical trial (21 female, 20 male; average age, 40.16 ± 12.56 years). Arterial stiffness parameters referring to rigidity of the arterial wall (pulse wave velocity [PWV], augmentation index, and pulse pressure) were investigated. Correlation between stiffness, and laboratory parameters (serum creatinine, urea, hemoglobin, albumin, cholesterine, triglycerides, transferrin, uric acid, glomerular filtration rate, and C-reactive protein) were analyzed. A non-invasive oscillometric method--Tensiomed Arteriograph--was applied to assess the arterial stiffness parameters. Statistical analysis was performed with the use of Statistica for Windows, version 8.0. A value of P < .05 was considered statistically significant for all statistical tests. We found a positive correlation between PWV and left ventricular wall thickness and a negative correlation between PWV and ejection fraction. We also found a positive significant correlation between serum level of transferrin and PWV. There was simultaneous significant progression concerning PWV and carotid artery sclerosis in a 3-year follow-up. There was no fatal cardiovascular event during the study period among our patients. All of our patients involved in this study are still alive. Our findings suggest that arterial stiffness monitoring is a reliable method to assess global cardiovascular risk among kidney-transplanted patients. The oscillometric method is convenient, fast, painless technique to monitor arterial function, which, in the case of pathological findings, proposes more frequent cardiovascular control.

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