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Table 3 Comparison of laboratory findings between survivors and non-survivors

From: Hyperchloremia is associated with 30-day mortality in major trauma patients: a retrospective observational study

  Total (266) Survivors (235) Non-survivors (31) p value
Creatinine (μmol/L), mean ± SD
 Initial 79.6 ± 38.9 79.6 ± 39.8 88.4 ± 25.6 0.20
 At 48 h. 79.6 ± 21.2 79.6 ± 39.8 132.6 ± 98.1 0.001
Sodium (mmol/L), mean ± SD
 Initial 140.6 ± 2.9 140.6 ± 2.7 140.6 ± 3.5 0.93
 At 48 h 141.5 ± 5.8 140.6 ± 4.3 148.5 ± 10.1 <0.001
Potassium (mmol/L), mean ± SD
 Initial 3.9 ± 0.5 3.9 ± 0.5 4.0 ± 0.6 0.63
 At 48 h 3.8 ± 0.5 3.8 ± 0.4 3.8 ± 0.8 0.84
Chloride (mmol/L), mean ± SD
 Initial 103.9 ± 3.3 104.1 ± 3.2 102.3 ± 3.9 0.006
 At 48 h 106.5 ± 6.1 105.7 ± 4.7 112.6 ± 10.7 0.002
Δchloride (mmol/L), mean ± SD 2.6 ± 6.6 1.7 ± 5.2 10.3 ± 11.1 <0.001
Δchloride (mmol/L), n (%)     <0.001
 -10 ≤ < 0 80 (32) 77 (34) 3 (11)  
 0 ≤ <10 148 (59) 134 (60) 14 (52)  
 10 ≤ <20 18 (7) 12 (5) 6 (2)  
 20 ≤ <30 5 (2) 2 (1) 3 (11)  
 40 ≤ 1 (1) 0 (0) 1 (4)  
pH, mean ± SD
 Initial 7.36 ± 0.10 7.37 ± 0.88 7.32 ± 0.18 0.16
 At 48h 7.50 ± 1.33 7.52 ± 1.43 7.37 ± 0.09 0.59
Base deficit (mmol/L), mean ± SD
 Initial −5.7 ± 4.0 −5.4 ± 3.8 −8.2 ± 4.6 0.003
 At 48 h −1.0 ± 3.0 −0.6 ± 2.7 −3.4 ± 4.1 <0.001
Lactate (mmol/L), mean ± SD
 Initial 3.9 ± 3.1 3.6 ± 2.7 6.4 ± 4.4 0.003
 At 48 h 1.8 ± 1.6 1.5 ± 1.3 3.4 ± 2.9 0.03
  1. SD standard deviation