1. New ventilators for the ICU—usefulness of lung performance reporting
Macnaughton P.D.  
British Journal of Anaesthesia 
Volume 97, Issue 1, Pages (July 2006)
DOI: /bja/ael115
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Pressure and flow curves during constant flow ventilation: tidal volume (Vt)= V ˙ ×I time (constant flow inflation); total respiratory system static compliance (Crs,st)=Vt/(P2−Pexp); total respiratory system dynamic compliance (Crs,dyn)=Vt/(P1−Pexp); airway resistance min (Raw)=(Ppeak−P1)/ V ˙ ; airway resistance max (Raw)=(Ppeak−P2)/ V ˙ .
British Journal of Anaesthesia  , 57-63DOI: ( /bja/ael115)
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Static PV curve. LIP defines optimal PEEP level while UIP defines maximal lung inflation pressure (end inspiratory pressure).
British Journal of Anaesthesia  , 57-63DOI: ( /bja/ael115)
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions

4. Fig 3
Dynostatic alveolar PV curve. Alveolar pressure is calculated according to the equation: Pdynostatic=(Pexp× V ˙ insp −Pinsp× V ˙ exp )/( V ˙ insp − V ˙ exp ). Every point on the dynostatic curve (Pxdyn) is calculated using pressure and flow values at isovolume levels (indicated by broken lines) during inspiration and expiration in the tracheal P/V loop. Reproduced from Karason and colleagues, with permission from Blackwell Publishing.44
British Journal of Anaesthesia  , 57-63DOI: ( /bja/ael115)
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions

5. Fig 4
Single breath expiratory volumetric capnogram. Vdphys/Vt= ( P a CO 2 − P E ′ CO 2 )/ P a CO 2 ; Vdalv/Vt =Vdphys/Vt−Vdaw/Vt.
British Journal of Anaesthesia  , 57-63DOI: ( /bja/ael115)
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions