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Table 1 Main characteristics of the study population

From: Noninvasive assessment of airflows by electrical impedance tomography in intubated hypoxemic patients: an exploratory study

Patients characteristics All patients (n = 30) PSV study (n = 10) VCV study (n = 20) p value PSV study vs. VCV study
Age, years 61 ± 12 60 ± 10 62 ± 13 0.729
Male sex, n (%) 17 (57) 5 (50) 12 (60) 0.602
SAPS II score at admission 50 ± 17 54 ± 19 48 ± 15 0.361
Etiology of AHRF, n (%) 0.168
 Pneumonia 16 (53) 5 (50) 11 (55)  
 Septic shock 6 (20) 1 (10) 5 (25)  
 Trauma 2 (7) 2 (20) 0  
 Postoperative AHRF 3 (10) 2 (20) 1 (5)  
 Other 3 (10) 0 (0) 3 (15)  
ARDS on the day of the study, n (%) 13 (43) 5 (50) 8 (40) 0.602
Number of lung quadrants involved, n 2 [1–3] 2 [1, 2] 3 [2–4] 0.035
PaO2/FiO2 213 ± 56 241 ± 46 199 ± 57 0.053
Days on MV before study, n 1 [1–2] 2 [2–4] 1 [1–2] 0.055
In-hospital mortality, n (%) 9 (30) 2 (20) 7 (35) 0.398
  1. PSV, pressure support ventilation; VCV, volume-controlled ventilation; SAPS, simplified acute physiology score; AHRF, acute hypoxemic respiratory failure; ARDS, adult respiratory distress syndrome; PaO2/FiO2, oxygen partial arterial tension/inspired oxygen fraction; MV, mechanical ventilation