Influence of vascular access type on outcome measures in patients on maintenance hemodialysis

Nephron. Clinical Practice
Deepa H ChandMedical Review Board of The Renal Network, Inc

Abstract

Previous studies postulate that end-stage renal disease (ESRD) patients dialyzed with central venous catheters (CVC) have poorer outcomes compared to patients using arteriovenous fistulae (AVF) or arteriovenous grafts (AVG). Clinical practice guidelines should obviate these differences if access was not important. This study compared clinical measures of adequacy, anemia, and nutrition/inflammation in prevalent hemodialysis patients in 2003 by access type. Data from The Renal Network Data System were analyzed by univariate analysis of variance to compare Kt/V, URR, albumin, hemoglobin (Hb) and recombinant human erythropoietin (EPO) dose by access type, while adjusting for pertinent factors. 12,501 patients were included. The access type distribution was AVF 36%, AVG 41%, and CVC 23%. CVC patients had lower mean URR, Kt/V, albumin concentration (p < 0.001) than other accesses. Serum Hbs were similar (p = 0.416), however EPO dose (U/kg/week) was higher in those dialyzed with CVC compared to AVF/AVG (p < 0.001). Despite practice guidelines, patients dialyzed via CVC have poorer outcome measures compared to other accesses. This suggests that AVF should be used and/or appropriate adjustments need to be made for those dialyzed with C...Continue Reading

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