scholarly journals Comparison of functional residual capacity and static compliance of the respiratory system during a positive end-expiratory pressure (PEEP) ramp procedure in an experimental model of acute respiratory distress syndrome

Critical Care ◽  
2008 ◽  
Vol 12 (4) ◽  
pp. R91 ◽  
Author(s):  
Bernard Lambermont ◽  
Alexandre Ghuysen ◽  
Nathalie Janssen ◽  
Philippe Morimont ◽  
Gary Hartstein ◽  
...  
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Experimental Model ◽  
Respiratory System ◽  
Functional Residual Capacity ◽  
Distress Syndrome ◽  
Positive End Expiratory Pressure ◽  
Static Compliance ◽  
Residual Capacity

scholarly journals Effect of positive end-expiratory pressure on functional residual capacity in two experimental models of acute respiratory distress syndrome

2020 ◽  
Vol 48 (6) ◽  
pp. 030006052092042
Author(s):  
Yu-Mei Wang ◽  
Xiu-Mei Sun ◽  
Yi-Min Zhou ◽  
Jing-Ran Chen ◽  
Kun-Ming Cheng ◽  
...  
Keyword(s):  
Acute Respiratory Distress Syndrome ◽  
Respiratory Distress Syndrome ◽  
Respiratory Distress ◽  
Functional Residual Capacity ◽  
Distress Syndrome ◽  
Experimental Models ◽  
Positive End Expiratory Pressure ◽  
Residual Capacity ◽  
Extra Pulmonary ◽  
Randomized Crossover Study

Objective Measurement of positive end-expiratory pressure (PEEP)-induced recruitment lung volume using passive spirometry is based on the assumption that the functional residual capacity (FRC) is not modified by the PEEP changes. We aimed to investigate the influence of PEEP on FRC in different models of acute respiratory distress syndrome (ARDS). Methods A randomized crossover study was performed in 12 pigs. Pulmonary (n = 6) and extra-pulmonary (n = 6) ARDS models were established using an alveolar instillation of hydrochloric acid and a right atrium injection of oleic acid, respectively. Low (5 cmH2O) and high (15 cmH2O) PEEP were randomly applied in each animal. FRC and recruitment volume were determined using the nitrogen wash-in/wash-out technique and release maneuver. Results FRC was not significantly different between the two PEEP levels in either pulmonary ARDS (299 ± 92 mL and 309 ± 130 mL at 5 and 15 cmH2O, respectively) or extra-pulmonary ARDS (305 ± 143 mL and 328 ± 197 mL at 5 and 15 cmH2O, respectively). The recruitment volume was not significantly different between the two models (pulmonary, 341 ± 100 mL; extra-pulmonary, 351 ± 170 mL). Conclusions PEEP did not influence FRC in either the pulmonary or extra-pulmonary ARDS pig model.

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