Expiratory pressure curve analysis for estimation of lungs mechanics

• Autorzy: Darowski M. , Pałko T. , Jucha A. , Kozarski M.
• Języki publikacji: EN

Abstrakty

EN

The analysis of an expiratory pressure curve by using an extra small pneumatic compliance is presented in this paper. The investigations of dynamic courses were performed for a very short time (<200 ms), and basic mechanical parameters of lungs were calculated. For analysis of measurement signals and monitoring of measurement circuit a new computer system was used. The measurement circuit was based on mechanical lungs model. The results of studies have shown that the applied method can be used for estimation of lungs compliance but to determine an airway resistance from the time constant an additional measurement of the flow rate curve is needed. The discussed method of lungs mechanics estimation in independent of ventilatory support.

Słowa kluczowe

EN

expiratory pressure curve; ventilatory support; airway resistance; lungs compliance

PL

ciśnienie wydechowe; wspomaganie wentylacji; podatność płuc

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2003
• Tom: Vol. 23, no. 1
• Strony: 91--102
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Darowski M.

• Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland

autor

Pałko T.

• Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland

autor

Jucha A.

• Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland

autor

Kozarski M.

• Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland

Bibliografia

• [1] Doboszyńska A., Wrotek K.: Badania czynnościowe układu oddechowego. PZWL, Warszawa 1999.
• [2] Guć M„ Rudowski R., Michnikowski M., Kosiński C., Kamiński B.: The Lung Impedance Changes During Respiratory Cycle Assessed By FOT in Mechanically Ventilated Patients. 40-th ICB Seminar Heart and Lung Assistance, Warsaw 23-28 November 1998, Lecture Notes.
• [3] Rudowski R Guć M.: Forced Oscillation Technique in Mechanically Ventilated Patients. Biocybernetics and Biomedical Engineering 20, 3, 49-57.
• [4] Gottfried S. B., Rossi A., Higgs B.D., Calverly P.M.A., Zocchi L., Bozic C., Milic-Emili J.: AM Rev Respir Dis 1985, 131, 414-420.
• [5] Guttman J, Mols G. Kessler W., Geiger K’: A New Diagnostic Method for Analysis of Non-Linear Respiratory Mechanics in Mechanically Ventilated Patients. ICB seminars, Warszawa 1997.
• [6] Guttman L, Eberhaid L„ Fabry B„ Bertschmann W., Wolff G.: Continuos calculation of intrached pressure in tracheally intubated patients. Anesthesiology 1993, 73, 503-513.
• [7] Darowski M„ Gottlieb-Iuacio L, Ludwigs U., Hedenstierna G.: Assessment of respiratory system compliance by a flow recording method- Acta Anaesthesiologica Scand, 1995, 39, 462-466.
• [8] National Instruments LabView User Manual 1998.