scholarly journals Changes in regional ventilation determined by volume and pressure-controlled ventilation as assessed by electrical impedance tomography in an experimental model of acid-induced acute lung injury

Critical Care ◽  
2010 ◽  
Vol 14 (S1) ◽  
Author(s):  
CA Holms ◽  
DA Otsuki ◽  
J Noel-Morgan ◽  
M Kahvegian ◽  
DT Fantoni ◽  
...  
Keyword(s):  
Acute Lung Injury ◽  
Lung Injury ◽  
Experimental Model ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Regional Ventilation ◽  
Impedance Tomography ◽  
Controlled Ventilation ◽  
Pressure Controlled Ventilation ◽  
Pressure Controlled

scholarly journals A Modified Method to Assess Tidal Recruitment by Electrical Impedance Tomography

2019 ◽  
Vol 8 (8) ◽  
pp. 1161 ◽  
Author(s):  
Thomas Muders ◽  
Benjamin Hentze ◽  
Philipp Simon ◽  
Felix Girrbach ◽  
Michael R.G. Doebler ◽  
...  
Keyword(s):  
Lung Injury ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Characteristic Curve ◽  
Receiver Operator Characteristic Curve ◽  
Positive End Expiratory Pressure ◽  
Regional Ventilation ◽  
Impedance Tomography ◽  
Modified Method ◽  
Tidal Recruitment

Avoiding tidal recruitment and collapse during mechanical ventilation should reduce the risk of lung injury. Electrical impedance tomography (EIT) enables detection of tidal recruitment by measuring regional ventilation delay inhomogeneity (RVDI) during a slow inflation breath with a tidal volume (VT) of 12 mL/kg body weight (BW). Clinical applicability might be limited by such high VTs resulting in high end-inspiratory pressures (PEI) during positive end-expiratory pressure (PEEP) titration. We hypothesized that RVDI can be obtained with acceptable accuracy from reduced slow inflation VTs. In seven ventilated pigs with experimental lung injury, tidal recruitment was quantified by computed tomography at PEEP levels changed stepwise between 0 and 25 cmH2O. RVDI was measured by EIT during slow inflation VTs of 12, 9, 7.5, and 6 mL/kg BW. Linear correlation of tidal recruitment and RVDI was excellent for VTs of 12 (R2 = 0.83, p < 0.001) and 9 mL/kg BW (R2 = 0.83, p < 0.001) but decreased for VTs of 7.5 (R2 = 0.76, p < 0.001) and 6 mL/kg BW (R2 = 0.71, p < 0.001). With any reduction in slow inflation VT, PEI decreased at all PEEP levels. Receiver-Operator-Characteristic curve analyses revealed that RVDI-thresholds to predict distinct amounts of tidal recruitment differ when obtained from different slow inflation VTs. In conclusion, tidal recruitment can sufficiently be monitored by EIT-based RVDI-calculation with a slow inflation of 9 mL/kg BW.

scholarly journals Electrical impedance tomography (EIT) for quantification of pulmonary edema in acute lung injury

Critical Care ◽  
2015 ◽  
Vol 20 (1) ◽  
Author(s):  
Constantin J. C. Trepte ◽  
Charles R. Phillips ◽  
Josep Solà ◽  
Andy Adler ◽  
Sebastian A. Haas ◽  
...  
Keyword(s):  
Acute Lung Injury ◽  
Lung Injury ◽  
Pulmonary Edema ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Impedance Tomography

Electrical impedance tomography in acute lung injury

2011 ◽  
Vol 35 (8) ◽  
pp. 509-517
Author(s):  
J. Riera ◽  
P.J. Riu ◽  
P. Casan ◽  
J.R. Masclans
Keyword(s):  
Acute Lung Injury ◽  
Lung Injury ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Impedance Tomography
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