The consequences of sudden fluid shifts on body composition in critically ill patients

Table 5 Relationship between intradialytic percentage change in intracellular water measured by bioelectrical impedance and pre-dialysis variables collected for the 31 patients

	r ²	r	95% CI	P
Age, years	0.05	-0.22	-0.53 to 0.14	0.23
SAPS II at ICU admission	0.18	0.43	0.08 to 0.67	0.01
Length of ICU stay before measurements, days	0.08	0.29	-0.06 to 0.58	0.10
Weight, kg	0.01	0.10	-0.25 to 0.44	0.44
Height, cm	0.002	0.05	-0.30 to 0.40	0.75
Body mass index, kg/cm²	0.006	0.08	-0.27 to 0.42	0.64
Body temperature, °C	0.01	-0.12	-0.45 to 0.24	0.51
Plasma sodium concentration, mmol/L	0.04	0.20	-0.16 to 0.53	0.26
Plasma creatinine concentration, μmol/L	0.002	0.05	-0.30 to 0.39	0.78
Plasma osmolality, mmol/kg	0.04	0.21	-0.15 to 0.52	0.26
Ultrafiltration, L	0.001	-0.04	-0.39 to 0.31	0.81
Dialysate temperature, °C	0.07	-0.27	-0.57 to 0.09	0.14
Dialysate sodium concentration, mmol/L	0.02	0.15	-0.21 to 0.48	0.40

P value <0.05 was considered significant, number = 31. CI, confidence interval (95%); SAPS II, Simple Acute Physiology Score.

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