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Table 1 Baseline characteristics of the patients (n = 70)

From: Internal jugular vein variability predicts fluid responsiveness in cardiac surgical patients with mechanical ventilation

Characteristic  
Age (years) 61 ± 10
Male sex, n (%) 44 (62.86)
Body mass index (kg/m2) 22 ± 3
Left ventricular ejection fraction (%) 50
Cardiac surgery category, n (%)
 Valve 37 (52.86)
 CABG 12 (17.14)
 CABG + valve 7 (10.00)
 Aortic surgery 9 (12.86)
 Others 5 (7.14)
Postoperative day, n (%)
d0 62 (88.57%)
 d1 8 (11.43%)
APACHE II scores 9 ± 5
EuroSCORE 4 ± 2
Tidal volume (mL) 520 ± 28
PEEP (cm H2O) 5
PaO2/FiO2 (mmHg) 123 ± 57
Lactate (mmol/L) 3.23 ± 3.39
Patients receiving norepinephrine, n (%) 45 (64.29)
Patients receiving dobutamine, n (%) 9 (12.86)
Dose of norepinephrine (μg kg−1 min−1) 0.24 (0.15–0.35)
Dose of dobutamine (μg kg−1 min−1) 0.33 (0.28–0.43)
  1. Values are expressed as mean ± SD, median (25–75% inter-quartile range) or number and frequency in %
  2. CABG coronary artery bypass grafting, APACHE II acute physiology and chronic health evaluation, EuroSCORE European system for cardiac operative risk evaluation, PEEP positive end-expiratory pressure, PaO 2 arterial partial pressure of oxygen, FiO 2 inspiratory fraction of oxygen