ASSESSMENT OF FUNCTIONAL RESIDUAL CAPACITY AND OXYGEN CONSUMPTION DURING PEEP TRIAL PROCEDURE
Purpose of the study was to compare the functional residual capacity and oxygen consumption with compliance and partial pressure of oxygen during automatic PEEP trial procedure — "PEEP INview". Material and methods; Dynamics of functional residual capacity, oxygen consumption, compliance and partial pressure of oxygen were studied in 14 patients at cardiac surgical unit during automatic PEEP trial procedure — "PEEP INview". Results; Significant dynamics of compliance and carbon dioxide production was not found. Partial pressure of oxygen cannot be used as the guideline in this study. Functional residual capacity increased in each incremental level of PEEP. Oxygen consumption increased during the PEEP changing from 6 to 8 cmH <sub>2</sub>O. Conclusion; It is defined that oxygen consumption is sensitive to PEEP level. Therefore the maximum diagnostics value of functional residual capacity measuring is expected in patients with restrictive lung disease.