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Table 1 Patient’s characteristics at inclusion

From: Diaphragm function and weaning from mechanical ventilation: an ultrasound and phrenic nerve stimulation clinical study

Characteristics
 Female, n (%) 24 (32)
 Age, years 58 (48–68)
 SOFA 5 (4–7)
 Duration of mechanical ventilation, days 4 (2–6)
Main reason for mechanical ventilation, n (%)
 Acute respiratory failure 28 (37)
 Shock 24 (32)
 Coma 23 (31)
Ventilator parameters
 Pressure support level, cmH2O 10 (8–10)
 Tidal volume, ml/kg ideal body weight 7 (5–8)
 PEEP, cmH2O 5 (5–6)
Clinical parameters
 Breaths, min−1 22 (20–25)
 Mean arterial pressure, mmHg 80 (69–98)
 Heart rate, min−1 89 (78–100)
Arterial blood gases
 pH 7.44 (7.40–7.45)
 PaCO2, mmHg 38 (34–44)
 PaO2/FiO2 279 (214–357)
  1. Continuous variables are expressed as median (interquartile range), and categorical variables are expressed as absolute value (%)
  2. SOFA sequential organ failure assessment, PEEP positive end-expiratory pressure, PaO 2 /FiO 2 ratio of arterial oxygen tension to inspired oxygen fraction