Whole blood viscosity: Effect of hemodialysis treatment and implications for access patency and vascular disease

Clinical Hemorheology and Microcirculation
Promila DharMary Hammes

Abstract

Hemodialysis patients have increased mortality from cardiovascular complications. Whole blood viscosity (WBV) and red cell aggregation (RCA) may influence the pathogenesis of vascular complications in this population. The objective of this study was to determine whether the hemodialysis treatment or vascular complications were associated with impaired WBV or RCA. This prospective, cross sectional investigation included 38 patients receiving chronic hemodialysis. Blood samples for WBV, RCA and hematocrit were drawn before and after dialysis. WBV was determined between 10 and 780 s-1 and RCA was measured by calculating aggregate shape parameter. WBV and RCA were subsequently assessed for correlation with a history of vascular disease. The mean WBV, aggregate shape parameter, and hematocrit post-dialysis were significantly higher than pre-dialysis values (p < 0.05). Using a linear model with WBV as the dependent variable, the covariates of aggregate shape parameter, hematocrit, weight, and history of diabetes were not significant. However, pre/post timing of the sample was a significant covariate. WBV correlated with prior access thrombosis or stenosis, especially if the patient had a history of peripheral vascular disease. Higher...Continue Reading

Citations

Mar 2, 2017·Journal of Biomechanical Engineering·S M Javid Mahmoudzadeh AkheratMary Hammes
Apr 12, 2013·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Jianfang CaoXiaojun Peng
Nov 5, 2019·Biomechanics and Modeling in Mechanobiology·Sjeng QuickenWouter Huberts
Jan 5, 2019·Angiology·Elif Hande Ozcan CetinAhmet Temizhan

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