Initial distribution volume of glucose can be approximated using a conventional glucose analyzer in the intensive care unit

Table 3 Glucose values and approximated initial distribution volume of glucose

Variable	Reference^a	Plasma^b	Whole blood^b
Preinjection glucose (mg/100 ml)	158 ± 42	155 ± 41	153 ± 40
Incremental glucose(mg/100 ml)^c	58 ± 11	57 ± 12	57 ± 11
Difference in glucose (mg/100 ml)^d	-	-2 ± 3	-3 ± 4
Approximated IDVG (l)	7.26 ± 1.73	7.38 ± 1.8	7.40 ± 1.65
Difference from original IDVG (l)	-0.17 ± 0.47	-0.05 ± 0.54	-0.04 ± 0.62

Values are presented as mean ± standard deviation. ^aFrom plasma glucose values using the same glucose analyzer for original IDVG. ^bUsing a conventional glucose analyzer (combined blood gas and glucose analyzer) for approximated IDVG. ^cThe incremental glucose value at 3 min after glucose injection. ^dDifference in glucose values in either plasma or whole blood from the reference plasma value. IDVG, initial distribution volume of glucose.

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