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The in-vitro influence of urea concentration on thromboelastrography in patients with and without end stage renal disease
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The in-vitro influence of urea concentration on thromboelastrography in patients with and without end stage renal disease
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The in-vitro influence of urea concentration on thromboelastrography in patients with and without end stage renal disease
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Journal Article
The in-vitro influence of urea concentration on thromboelastrography in patients with and without end stage renal disease
2023
Overview
End stage renal disease (ESRD) is associated with platelet dysfunction but also thromboembolic complications. The specific role of increased blood urea nitrogen (BUN) on coagulation is unclear. We aimed to characterize thromboelastography (TEG) parameters from males and females with ESRD and normal kidney function and evaluate if exogenous urea in vitro reproduced those TEG differences.
We collected blood samples from 20 living kidney donors and 20 kidney recipients. TEG was performed without and with two increasing urea concentrations in vitro. TEG parameters were compared between recipients and donors.
Blood from kidney recipients showed baseline increased maximum amplitude (MA) and shortened time to maximum amplitude (TMA) compared to donors. These differences were not confirmed in females. In all patients, BUN was inversely correlated with TMA (r = −0.342; p = 0.031). In males, BUN and creatinine concentrations showed a direct correlation with MA (0.583; p = 0.007) and an inverse correlation with TMA (r = −0.520; p = 0.019). Urea in vitro decreased R-time (p = 0.005) and increased LY30 (p = 0.009) in donors but not recipients.
ESRD is associated with increased MA and decreased TMA on TEG. No change in MA was observed with increasing urea concentrations in vitro. Gender-specific variability in TEG parameters were observed.
•No change in MA was observed with increasing urea concentrations in both donors and recipients•In all patients, BUN was inversely correlated with TMA•In males, BUN and creatinine concentrations showed a direct correlation with MA•Urea in vitro decreased R-time and increase LY30 in healthy kidney transplant donors but not recipients.
