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Table 2 Comparison of perioperative characteristics of mortality and survival amongst hyperlactatemic patients

From: Outcomes of post-cardiac surgery patients with persistent hyperlactatemia in the intensive care unit: a matched cohort study

  Non-survivors (n = 17) Survivors (n = 127) p-value
Pre-operative characteristics    
 Gender (male) 9 (52.9 %) 84 (66.1 %) 0.29
 Age (years) 75 (56–87) 70 (43–89) 0.12
 Parsonnet score 31.5 (17.0–49.0) 16.8 (0–46.5) <0.0001
 Parsonnet score greater than 31 20 (15.8 %) 9 (52.9 %) 0.001
 Operation status (emergency) 3 (17.7 %) 14 (11.5 %) 0.03
 Surgery type    0.36
 Dialysis 3 (17.7 %) 3 (2.4 %) 0.02
 Chronic Obstructive Pulmonary Disease 4 (23.5 %) 6 (4.7 %) 0.02
 Congestive Heart Failure 11 (64.7 %) 50 (39.4 %) 0.05
Post-operative characteristics    
 Cardiopulmonary Bypass time (min) 153 (83–214) 110 (25–302) 0.01
 Post-operative Intra-aortic Balloon Pump 8 (47.1 %) 21 (16.5 %) 0.003
 Time to peak lactate >30 h 11 (64.7 %) 3 (2.4 %) <0.0001
 Time to peak lactate (hours) 37.6 (1.3–385) 7.5 (0.25–755.5) <0.0001
 Peak arterial lactate (mmol/L) 10.2 (2.4–18) 4.4 (1.7–13.1) 0.0002
 Total Mechanical Ventilation Days 3.14 (0–76.5) 0.89 (0.14–44.1) 0.0001
 Acute kidney injury 16 (100 %) 64 (51.6 %) 0.0002
 Peak creatinine (μmol/L) 309 (107–738) 119 (66–840) <0.0001
 Postoperative rise in creatinine (%) 30 (−80 to 254) 164 (31 to 660) <0.0001
  1. Cases presented with peak lactate ≥3.0 mmol/L in the postoperative ICU admission. Data is expressed as: number of patients (frequency in percentage) or median (range)