Choice of proper lung ventilation method

• Autorzy: Darowski M. , Gólczewski T. , Michnikowski M.
• Języki publikacji: EN

Abstrakty

EN

In the article three different methods of lung ventilation have been analyzed: Continuous Positive Airways Pressure (CPAP), Proportional Assist Ventilation (PAV) and Pressure Support Ventilation (PSV). The aim of these analyses was to predict clinical situations when the considered modes of ventilation would play their role in the best, optimal way. The study on effective ventilatory support by CPAP, PAV and PSY was conducted using virtual respiratory system - a new, but yet verified model of the system, recently developed by our group. Computer simulation, done on a healthy lung model and on a pathologically changed lung model, has clearly shown the conditions under which CPAP, PAV or PSY could be really effective. CPAP is worth using in patients with a high airways resistance, in which case this mode of ventilatory support ensures breathing with normal frequency and less energy-consuming inspiration. PAV usually results in a smaller peak and the mean alveolar pressure than PSY which decreases a potentially harmful effect of the positive pressure ventilation on the cardiovascular system. On the other hand, PAV may be used safely when estimation of the parameters such as the lung/thorax compliance and the airway resistance is reliable, since the setting of the supporting pressure is based on this estimation.

Słowa kluczowe

EN

mechanical ventilation; barotrauma; virtual lungs; ventilatory modes; CPAP; PAV; PSV; computer simulation

PL

wentylacja mechaniczna; barotrauma; symulacja komputerowa

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2006
• Tom: Vol. 26, no. 1
• Strony: 21--37
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Darowski M.

autor

Gólczewski T.

autor

Michnikowski M.

• Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, 02-109 Warsaw, ul. Ks. Trojdena 4, Poland,

Bibliografia

• 1. Stock Christine M., Perel A.: Mechanical ventilation and respiration support [in Polish]. α-medica press 1999.
• 2. Younes M.: Proportional Assist Ventilation, a New Approach to Ventilatory Support. American Review of Respiratory Diseases 1992, 145, 114-120.
• 3. Golczewski T., Kozarski M. and Darowski M.: The respirator as a user of virtual lungs. Biocybernetics and Biomedical Engineering 2003, 23(2), 57-66.
• 4. Darowski M., Kozarski M. and Golczewski T.: Model studies on respiratory parameters for different lung structures, Biocybernetics and Biomedical Engineering 2000, 20, 67-77.
• 5. Kozarski M., Golczewski T., Darowski M.: Computer models of mechanical properties of lungs. In Biocybernetics and Biomedical Engineering, vol 7: Computer and telemetric systems in medicine. [in Polish] Akademicka Oficyna Wydawnicza Exit, Warszawa 2002, 119-131.
• 6. Golczewski T., Darowski M.: Influence of ventilatory mode on respiration parameters - investigation on virtual lungs, Biocybernetics and Biomedical Engineering 2003, 23(3), 63-72.
• 7. Bates J.H.T., Milic-Emili J.: Influence of the viscoelastic properties of the respiratory system on the energetically optimum breathing frequency, Annals of Biomedical Engineering, 1993, 21, 489- 499.