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Population-based volume kinetics of crystalloids and colloids in healthy volunteers
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Population-based volume kinetics of crystalloids and colloids in healthy volunteers
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Journal Article
Population-based volume kinetics of crystalloids and colloids in healthy volunteers
2019
Overview
We characterized the volume kinetics of crystalloid solutions (Ringer’s lactate solution and 5% dextrose water) and colloid solutions (6% tetrastarch and 10% pentastarch) by nonlinear mixed-effects modeling in healthy volunteers. We also assessed whether the bioelectrical impedance analysis parameters are significant covariates for volume kinetic parameters. Twelve male volunteers were randomly allocated to four groups, and each group received the four fluid solutions in specified sequences, separated by 1-week intervals to avoid any carryover effects. Volunteers received 40 ml/kg Ringer’s lactate solution, 20 ml/kg 5% dextrose water, 1000 ml 6% tetrastarch, and 1000 ml 10% pentastarch over 1 h. Arterial blood samples were collected to measure the hemoglobin concentration at different time points. Bioelectrical impedance spectroscopy (BIS, INBODY S10, InBody CO., LTD, Seoul, Korea) was also carried out at preset time points. In total, 671 hemoglobin-derived plasma dilution data points were used to determine the volume kinetic characteristics of each fluid. The changes in plasma dilution induced by administration of crystalloid and colloid solutions were well-described by the two-volume and one-volume models, respectively. Extracellular water was a significant covariate for the peripheral volume of distribution at baseline in the volume kinetic model of Ringer’s lactate solution. When the same amount was administered, the colloid solutions had ~4 times more plasma expansion effect than did the crystalloid solutions. Starches with larger molecular weights maintained the volume expansion effect longer than those with smaller molecular weights.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
/ Adult
/ Colloids
/ Crystalloid Solutions - chemistry
/ Crystalloid Solutions - pharmacology
/ Dextrose
/ Humanities and Social Sciences
/ Humans
/ Hydroxyethyl Starch Derivatives - chemistry
/ Isotonic Solutions - chemistry
/ Isotonic Solutions - pharmacology
/ Kinetics
/ Male
/ Plasma Substitutes - chemistry
/ Plasma Substitutes - pharmacology
/ Ringer's Lactate - chemistry
/ Ringer's Lactate - pharmacology
/ Science
