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JCU 2007 March;15(1) :8-12.
Effects of Closure of the Arteriovenous Fistula on Left Ventricular Mass and Function in Kidney Transplantation Patients
San Kim, Jung Yun Moon, Jung Eun Huh, Jeoung Myung Ahn, Hyeon gook Lee, Kyoung Im Cho, Tae Ik Kim
Department of Cardiology, Maryknoll Medical Center, Busan, Korea
Corresponding Author: Tae Ik Kim ,
Cardiovascular disease is the leading cause of morbidity and mortality in kidney transplantion recipients. Enhanced cardiac load by the persistence of functioning AVF in posttransplant period is associated with LV hypertrophy and may adversely influence cardiac outcome. Method: To investigate the impact of AVF on LV mass and function in kidney transplant recipients, 46 patients with functioning AVF were randomly assigned to surgical closure of AVF (fistular closing group, FC, n=23) or maintenance of fistula (fistular maintenance group, FM, n=23). Serum creatinine of all participants was stable(1.4±0.3). Mean age was 46±11. Mean posttransplant month was 78±53(12-161). Echocardiography and determination of N-terminal pro-BNP, cTnT and CRP were done at 0, 1 and 6 months in group 1(FC), and at 0 and 6 months in group 2(FM).
Baseline echocardiographic indices of systolic and diastolic LV function such as EF, E/A, E/E' and Tei index were not significantly different between groups. In patients whose AVF was surgically closed, LV mass(247.7±76.8 to 235.2±66.5, p=0.015) and LV mass index(144.0±10.1 to 137.1±8.6, p=0.02) significantly reduced at one month after closure, and no further significant change was observed at 6 months. In two groups no significant change in LV systolic and diastolic performance indices were observed. BNP, cTnT and CRP did not differ between groups in baseline value and did not change after closure. Conclusions: We conclude that the persistence of functioning AVF in kidney transplantation recipients is associated with LVH, and which can be reduced by closure of fistula. As LVH is one of major determinants of cardiovascular outcome in transplant patients as well as in general population, it would be prudent to close the fistula in patients with stable graft function.
Keywords: Ateriovenous fistula, Left ventricular hypertrophy, Kidney transplantation recipients
Volume 25, No 1
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