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Fig. 4 | Annals of Intensive Care

Fig. 4

From: Reliability and limits of transport-ventilators to safely ventilate severe patients in special surge situations

Fig. 4

Impact of flow on effective volume with Osiris 3 ventilator. This figure shows the volume error of the Osiris 3 expressed in percentage of Vt set according to different inspiratory flows obtained at a constant 450 ml Vt set. Compliance, resistance and PEEP were set at 20 ml/cmH2O, 15 cmH2O/l/s and 10 cmH2O respectively. Black circles were obtained with 100% FiO2 while the white circles were obtained with 70% FiO2. Respiratory rate associated with each point is also displayed. This figure illustrates that for an inspiratory flow below 30 l/min, the Vt error is substantial with 70% FiO2. The Vt error is within ± 0.5 ml/kg PBW (which corresponds to an 8% difference between set and measured Vt) whatever the inspiratory flow when 100% FiO2 is selected

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