Repeatability of measurements of the initial distribution volume of glucose in haemodynamically stable patients.
OBJECTIVE
The initial distribution volume of glucose (IDVG) has been proposed to provide a useful tool to estimate the central extracellular fluid volume. The purpose of this study was to determine the repetition interval of two consecutive measurements in haemodynamically stable patients without presence of recent changes in fluid status.


METHODS
Twenty-nine patients admitted to the general intensive care unit of the University of Hirosaki Hospital were entered into this study. After achieving a haemodynamically stable state in each patient regardless of an infusion of vasoactive drugs, two glucose challenges at an interval of either 30 or 60 min, were carried out to calculate the IDVG. The IDVG was calculated using a one-compartment model after intravenous administration of glucose (5 g) followed by serial arterial blood sampling.


RESULTS
Although plasma glucose levels immediately before the second glucose challenge in either group were increased compared with those of the first challenge (P < 0.001, respectively), the bias of the IDVG measurements was 0.08 +/- 0.32 L (SD) for the 30-min group and -0.19 +/- 0.28 L for the 60-min group.


CONCLUSIONS
Our results indicate that IDVG determinations can be reliably repeated within a minimum interval of 30 min.
Department of Anaesthesiology, Hannover Medical School, Hannover, Germany.
B O
BO
Rose
H
H
Ishihara
H
H
Okawa
B
B
Panning
S
S
Piepenbrock
A
A
Matsuki
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001786:Blood Glucose; D001794:Blood Pressure; D005260:Female; D005947:Glucose / Q000493:pharmacokinetics*; D006339:Heart Rate; D006801:Humans; D007362:Intensive Care Units; D007564:Japan; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D014018:Tissue Distribution
D001786:Blood Glucose; D005947:Glucose