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Table 4 Relationship between intradialytic percentage change in extracellular water measured by bioelectrical impedance and pre-dialysis variables collected for the 31 patients

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

 

r 2

r

95% CI

P

Age, years

0.02

-0.15

-0.48 to 0.21

0.40

SAPS II at ICU admission

0.001

-0.03

-0.38 to 0.32

0.85

Length of ICU stay before measurements, days

0.002

-0.05

-0.30 to 0.40

0.77

Weight, kg

< 0.001

-0.002

0.35 to 0.35

0.98

Height, cm

< 0.001

0.07

-0.28 to 0.41

0.68

Body mass index, kg/cm2

< 0.001

0.01

-0.34 to 0.36

0.94

Body temperature, °C

0.10

-0.32

-0.60 to 0.004

0.08

Plasma sodium concentration, mmol/L

0.09

0.31

-0.05 to 0.59

0.09

Plasma creatinine concentration, ÎĽmol/L

< 0.001

-0.07

-0.41 to 0.28

0.69

Plasma osmolality, mmol/kg

0.02

-0.16

-0.48 to 0.20

0.39

Ultrafiltration, L

0.05

-0.22

-0.53 to 0.14

0.23

Dialysate temperature, °C

< 0.001

0.01

-0.34 to 0.36

0.94

Dialysate sodium concentration, mmol/L

0.03

0.17

-0.21 to 0.26

0.34

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