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Table 2 Operative profile and postoperative outcomes

From: The effect of hyperlactatemia timing on the outcomes after cardiac surgery

Variable

Early hyperlactatemia

 

No

Yes

P value

Intraoperative variables

   

 Duration of CPB (min)

150 ± 56

181 ± 54

0.001

 Clamp time (min)

120 ± 44

144 ± 49

0.001

Postoperative outcomes

   

 Operative mortalitya

0 (0)

3.7% (2)

0.009

 ECMO

0 (0)

5.7% (3)

< 0.001

 IABP

3.2% (8)

7.7% (4)

0.10

 Metabolic acidosis

2.8% (7)

17.3% (9)

< 0.001

 Peak troponin T level (ng/mL)

0.9 (0.65–1.4)

1.1 (0.7–1.8)

0.03

 Stroke

0.8% (2)

5.7% (3)

0.048

 AKI requiring dialysis

2% (5)

1.9% (1)

0.98

 Deep sternal infection

0(0)

5.7% (3)

< 0.001

 ICU length of stay (days)

3 (2–5)

5 (3–6.5)

0.004

 Hospital length of stay (days)

9 (7–14)

10 (7–17)

0.02

  1. Metabolic acidosis was defined as a PH ≤ 7.3 with low HCO3 (< 22 mEq/L) on ABG during the first 10 h after surgery. Postoperative AKI was defined as any new postoperative renal failure that requires dialysis
  2. AKI acute kidney injury, CPB cardiopulmonary bypass, ECMO extracorporeal membrane oxygenation, ICU intensive care unit.
  3. aOperative mortality is defined as any in-hospital death