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Table 2 Cumulative data on fluid and electrolyte administration

From: Estimation of sodium and chloride storage in critically ill patients: a balance study

  Day 1 Day 2 Day 3 Day 4 P*
Intake      
Fluid (L) 3.6 ± 0.4 7.9 ± 0.5 11.0 ± 0.5 13.6 ± 0.6  
Sodium (mmol) 460 ± 52 935 ± 67 1235 ± 72 1441 ± 75  
Chloridea (mmol) 420 ± 53 872 ± 68 1162 ± 79 1377 ± 76  
Output      
Fluid (L) 1.6 ± 0.1 3.9 ± 0.2 6.5 ± 0.3 8.9 ± 0.3  
Sodium (mmol) 139 ± 14 293 ± 23 472 ± 30 626 ± 35  
Chloridea (mmol) 117 ± 17 255 ± 28 418 ± 43 574 ± 47  
Balance      
Fluid (L) 1.9 ± 0.3 3.7 ± 0.5 4.0 ± 0.5 3.9 ± 0.6  
Sodium (mmol) 321 ± 47 642 ± 62 769 ± 72 822 ± 76  
Chloridea (mmol) 274 ± 51 498 ± 66 535 ± 82 556 ± 82  
Plasma sodium (mmol/L) 137.1 ± 0.5 136.6 ± 0.5 136.2 ± 0.6 136.9 ± 0.5 0.741
Plasma chloridea (mmol/L) 109.8 ± 0.9 109.3 ± 0.8 108.2 ± 0.9 108.0 ± 0.9 0.107
  1. Data are depicted as mean ± SE
  2. * Difference between day 1 and day 4
  3. aChloride data were available for 27, 27, 24 and 28 patients, respectively, on day 1 to day 4