Fig. 5From: Respiratory acidosis during bronchoscopy-guided percutaneous dilatational tracheostomy: impact of ventilator settings and endotracheal tube sizeMinute ventilation during dilatational tracheostomy. Tidal volume was set to 6 ml/kg PBW (a, c and e) or 12 ml/kg PBW (b, d and f) for the entire period. *p ≤ 0.05, **p ≤ 0.01 and ***p ≤ 0.001. (ET - endotracheal tube, I.D. - internal diameter)Back to article page