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Plasma Volume Expansion Resulting from Intravenous Glucose Tolerance Test
Linköping University, Department of Medical and Health Sciences, Anesthesiology. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Sinnescentrum, Department of Anaesthesiology and Surgery UHL.
Karolinska Institute.
2011 (English)In: Computational & Mathematical Methods in Medicine, ISSN 1748-670X, E-ISSN 1748-6718, Vol. 2011, no 965075Article in journal (Refereed) Published
Abstract [en]

Objective. To quantify the degree of plasma volume expansion that occurs during an intravenous glucose tolerance test (IVGTT). Methods. Twenty healthy volunteers (mean age, 28 years) underwent IVGTTs in which 0.3 g/kg of glucose 30% was injected as a bolus over 1 min. Twelve blood samples were collected over 75 min. The plasma glucose and blood hemoglobin concentrations were used to calculate the volume distribution (𝑉𝑑) and the clearance (𝐶𝐿) of both the exogenous glucose and the injected fluid volume. Results. The IVGTT caused a virtually instant plasma volume expansion of 10%. The half-life of the glucose averaged 15 min and the plasma volume expansion 16 min. Correction of the fluid kinetic model for osmotic effects after injection reduced 𝐶𝐿 for the infused volume by 85%, which illustrates the strength of osmosis in allocating fluid back to the intracellular fluid space. Simulations indicated that plasma volume expansion can be reduced to 60% by increasing the injection time from 1 to 5 min and reducing the glucose load from 0.3 to 0.2 g/kg. Conclusion. A regular IVGTT induced an acute plasma volume expansion that peaked at 10% despite the fact that only 50–80 mL of fluid were administered.                                    

Place, publisher, year, edition, pages
Taylor and Francis / Hindawi Publishing Corporation , 2011. Vol. 2011, no 965075
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-72668DOI: 10.1155/2011/965075ISI: 000296809800001OAI: diva2:461111

Funding Agencies|Stockholm County Council|2009-0433|Stiftelsen Olle Engkvist Byggmastare||

Available from: 2011-12-02 Created: 2011-12-02 Last updated: 2013-04-22

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Hahn, Robert
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