Hydroxyethyl Starch (HES) [130/0.4],??? a New HES Specification

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Abstract
Objective: To investigate the pharmacokinetics and safety of a daily infusion of 500mL of hydroxyethyl starch (HES) [130/0.4] 10% solution on 10 consecutive days. Study design and participants: An open, one-way, multiple-dose study was performed in 12 healthy male volunteers. Daily infusions over 30 minutes of 500mL of HES (130/0.4) 10% solution were performed on 10 consecutive days. Plasma and urine HES concentrations were determined repeatedly during the study until 72 hours after the last infusion. Results: Maximum plasma HES concentrations, assessed with geometric means of 7.7 and 7.4 mg/mL, respectively, as well as the time courses of the plasma concentrations were similar on days 1 and 10 of treatment. Plasma HES concentrations 24 hours after the last infusion were 0.48 mg/mL (mean). Total plasma clearance was calculated as 23.7 and 21.8 mL/min on days 1 and 10, respectively. Urinary recoveries of 69% on day 1 and of 70% on day 10 were in good agreement. Conclusion: The results clearly demonstrated that there is no relevant accumulation in plasma after repetitive infusion of the medium-molecular weight HES (130/0.4) solution, which exhibits a high renal excretion rate over 10 days. Local as well as systemic tolerability of 10 repeated doses was good.

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