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Table 1 Baseline data and concomitant therapy

From: High-frequency oscillation ventilation for hypercapnic failure of conventional ventilation in pulmonary acute respiratory distress syndrome

Number of patients 26
Age (years) 63 ± 16
Male sex 16 (61.5%)
SAPS II 55 ± 15
ARDS  
 Severe 6 (23%)
 Moderate 19 (73%)
 Mild 1(4%)
Diagnosis  
 Pneumonia 22 (85%)
 Granulomatosis with polyangiitis 1 (3.8%)
 Extrinsic allergic alveolitis 1 (3.8%)
 Bronchiolitis obliterans with organizing pneumonia 1 (3.8%)
 Unknown origin 1 (3.8%)
Ventilation prior to HFOV (all BIPAPassist)  
 Duration (hours) 17 ± 22
 PEEP (cmH2O) 12 [6-20]
 Inspiratory pressure (cmH2O) 27 [18-36]
 Tidal volume (ml) 455 ± 108
 Tidal volume (ml/kg of ideal body weight) 6.6 ± 0.9
 Minute ventilation (l/min) 9.6 ± 1.8
 Frequency 22 ± 6
 MV x PaCO2/40 (l/min) 15.6 ± 3.0
Proning 6 (23%)
  1. Values are given as number (percentage), mean ± standard deviation, or median [range], respectively; MV x PaCO2/40, required minute ventilation for normal PaCO2. SAPS II, simplified acute physiology score II; ARDS, acute respiratory distress syndrome; HFOV, high-frequency oscillation ventilation; PEEP, positive end-expiratory pressure; MV, minute ventilation; PaCO2, arterial partial pressure of CO2.