Table 1 Baseline characteristics of the cohort

Age (years), mean (SD)

68 (11)

Women, n (%)

30 (37%)

Body mass index (kg m⁻²), mean (SD)

27 (6)

SAPS II, mean (SD)

46 (18)

Medical history, n (%)

Chronic high blood pressure

54 (67%)

Diabetes (insulin dependent and non-insulin dependent)

27 (33%)

Cardiopathy

  Ischemic

37 (46%)

  Valvular (mitral, aortic)

32 (39%)

Chronic renal failure

17 (21%)

Estimated glomerular filtration rate (ml min⁻¹ 1.73 m⁻²), mean (SD)

77 (22)

Admission to ICU, n (%)

Medical/surgical

32/49

  Cardiac surgery (CABG and/or valvular)

49 (60%)

  Septic shock

13 (16%)

  Cardiogenic shock

12 (15%)

  Other (hemorrhagic shock, polytrauma, stroke, subarachnoid hemorrhage)

7 (9%)

Mechanical ventilation during ICU stays, n (%)

72 (89%)

Fluid overload at inclusion (%), median (IQR)

4.5 (0.8–6.5)

ICU length of stay (days), median (IQR)

5 (3–10)