Air-Mattress Motion Therapy for Respiratory Failure After Cardiothoracic Surgery
Purpose ::: The standard management of respiratory failure after cardiothoracic surgery involves prolonged mechanical ventilation, drug support, and chest physiotherapy. We report the effectiveness of a novel type of respiratory physiotherapy, the air mattress V-CUE unit, which utilizes a computerized automatic combination of three movements: rotation, percussion, and vibration.
Exergy analysis permits meaningful efficiencies to be evaluated for a system or process, and the sources, causes and locations of thermodynamic losses to be determined. This study presents exergetic modeling of a small turbojet engine via exergetic response surfaces. Turbojet engine consists of an inlet, a centrifugal compressor, reverse flow combustion chamber, axial-flow turbine and exhaust nozzle. The flight Mach number and altitude are examined on the exergetic efficiencies of total engine performance. The results of analysis are given as three dimensional exergetic response surface plots related to these operating parameters.