Skip to main content

Table 4 Baseline characteristics, gasometric variables and serum renal biomarkers according to the ABE cutoff point

From: Alactic base excess predicts the use of renal replacement therapy in patients with septic shock

Variable

ABE ≤ − 5.7

n = 65

ABE > − 5.7

n = 99

p value

Renal replacement therapy, Yes n (%)

38 (58.5)

30 (30.3)

< 0.0005*

Age, years old (IQR)

62 (17.5)

57 (26)

0.351

Gender

  

0.019*

Female, n (%)

41 (63.1)

44 (44.4)

 

Male, n (%)

24 (36.9)

55 (55.6)

 

Comorbidities n (%)

   

DM, Yes

37 (56.9)

36 (36.4)

0.010*

SAH, Yes

34 (52.3)

48 (48.5)

0.632

Heart disease, Yes

12 (18.5)

11 (11.1)

0.185

Etiology, n (%)

  

0.001*

Lung, Yes

15 (23.1)

53 (53.5)

 

Abdominal, Yes

30 (46.2)

34 (34.3)

 

Urinary, Yes

14 (21.5)

10 (10.1)

 

Soft tissues, Yes

2 (3.1)

1 (1)

 

Other

4 (6.2)

1 (1)

 

Norepinefrine mcg/kg/min (IQR)

0.32 (0.32)

0.28 (0.29)

0.077

Inotropic, Yes n (%)

6 (9.2)

15 (15.2)

0.267

MV, days (IQR)

4 (5)

4 (5)

0.170

ICU STAY, days (IQR)

5 (5)

6 (6)

0.062

SAPS II, points (IQR)

70 (13.5)

71 (18)

0.926

Mortality, Yes n (%)

34 (52.3)

49 (49.5)

0.725

pH

7.25 (0.11)

7.34 (0.11)

< 0.001*

PaO2/FiO2, mmHg (IQR)

105 (65)

90 (58)

0.003*

PaCO2, mmHg (IQR)

33 (11)

38 (11)

< 0.001*

SBE, mmol/L (SD)

− 13.6 (5.45)

− 4.5 (4.9)

< 0.001*

HCO3−, mmol/L (SD)

13.6 (4.35)

20.4 (5.2)

< 0.001*

Lactate, mmol/L (IQR)

3.8 (2.4)

2.8 (2.2)

0.004*

AG, mEq/L (IQR)

17 (6.5)

13 (5.7)

< 0.001*

Na–Cl, mEq/L (IQR)

31 (4.5)

33 (6)

< 0.001*

SCr, mg/dL (IQR)

2.9 (2.75)

1.8 (1.8)

< 0.001*

Urea, mg/dL (IQR)

100 (63.75)

64 (70.3)

< 0.001*

  1. IQR, interquartile range; DM, diabetes mellitus; SAH, systemic arterial hypertension; mcg/kg/min, microgram/kilogram/minute; MV, mechanical ventilation; ICU, intensive care unit; SAPS II, Simplified Acute Physiology Score II; pH, hydrogenion potential; PaO2/FiO2, partial pressure arterial oxygen and fraction of inspired oxygen; mmHg, millimeters of mercury; IQR, interquartile range; SD, standard deviation; PaCO2, arterial carbon dioxide pressure; SBE, standard base excess; HCO3−, bicarbonate; ABE, alactic base excess; AG, anion gap; Na–Cl, sodium-chloride difference; SCr, serum creatinine
  2. *Significative difference between groups (p < 0.05)