1. Evaluation of a New Extracorporeal CO 2 Removal Device in an Experimental Setting.
- Author
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Di Nardo, Matteo, Annoni, Filippo, Su, Fuhong, Belliato, Mirko, Lorusso, Roberto, Broman, Lars Mikael, Malfertheiner, Maximilian, Creteur, Jacques, and Taccone, Fabio Silvio
- Subjects
ADULT respiratory distress syndrome ,CARBON dioxide ,GAS flow ,OBSTRUCTIVE lung diseases ,RESPIRATORY acidosis - Abstract
Background: Ultra-protective lung ventilation in acute respiratory distress syndrome or early weaning and/or avoidance of mechanical ventilation in decompensated chronic obstructive pulmonary disease may be facilitated by the use of extracorporeal CO
2 removal (ECCO2 R). We tested the CO2 removal performance of a new ECCO2 R (CO2 RESET) device in an experimental animal model. Methods: Three healthy pigs were mechanically ventilated and connected to the CO2 RESET device (surface area = 1.8 m2 , EUROSETS S.r.l., Medolla, Italy). Respiratory settings were adjusted to induce respiratory acidosis with the adjunct of an external source of pure CO2 (target pre membrane lung venous PCO2 (Ppre CO2 ): 80–120 mmHg). The amount of CO2 removed (VCO2 , mL/min) by the membrane lung was assessed directly by the ECCO2 R device. Results: Before the initiation of ECCO2 R, the median Ppre CO2 was 102.50 (95.30–118.20) mmHg. Using fixed incremental steps of the sweep gas flow and maintaining a fixed blood flow of 600 mL/min, VCO2 progressively increased from 0 mL/min (gas flow of 0 mL/min) to 170.00 (160.00–200.00) mL/min at a gas flow of 10 L/min. In particular, a high increase of VCO2 was observed increasing the gas flow from 0 to 2 L/min, then, VCO2 tended to progressively achieve a steady-state for higher gas flows. No animal or pump complications were observed. Conclusions: Medium-flow ECCO2 R devices with a blood flow of 600 mL/min and a high surface membrane lung (1.8 m2 ) provided a high VCO2 using moderate sweep gas flows (i.e., >2 L/min) in an experimental swine models with healthy lungs. [ABSTRACT FROM AUTHOR]- Published
- 2021
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