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Table 1 Demographic and biochemical data for patients with and without post-operative morbidity

From: Changes in central venous saturation after major surgery, and association with outcome

Data class Complications (n = 64) No complications (n = 53) p
Demographic    
   Age (years) 67.0 ± 12.3 66.7 ± 10.4 0.89
   Blood loss (ml) 1,200 (520–2,000) 1,000 (725–2,350) 0.88
   GDT 27/64 (42%) 35/53 (66%) 0.02*
   APACHE II score 9.9 ± 4.3 9.0 ± 3.8 0.28
   P-POSSUM score 40.1 ± 8.1 36.8 ± 6.8 0.02*
   ASA score 3 (2–3) 3 (2–3) 0.61
Biochemical    
   Baseline base excess (mmol l-1) -2.62 ± 3.03 -2.40 ± 3.31 0.71
   Lowest base excess (mmol l-1) -3.67 ± 3.04 -4.30 ± 3.17 0.29
   Base excess, 8-hour mean (mmol l-1) -2.73 ± 3.83 -2.31 ± 3.15 0.44
   Baseline lactate (mmol l-1) 1.49 ± 0.81 1.38 ± 0.74 0.43
   Highest lactate (mmol l-1) 1.93 ± 1.30 1.80 ± 0.88 0.55
   Lactate, 8-hour mean (mmol l-1) 1.29 ± 0.81 1.23 ± 0.55 0.65
  1. *Statistically significant difference. Data are presented as means ± SD, medians (interquartile range) or absolute values (%). APACHE, Acute Physiology and Chronic Health Evaluation; GDT, patients receiving goal-directed therapy; P-POSSUM, Portsmouth Physiologic and Operative Severity Score for the enUmeration of Mortality and morbidity