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  • Title: [Proportional assisted ventilation--clinical use of a new ventilation mode].
    Author: Fichter J, Stahl C, Meiners B, Sybrecht GW.
    Journal: Med Klin (Munich); 1996 Apr 12; 91 Suppl 2():70-1. PubMed ID: 8684334.
    Abstract:
    BACKGROUND: Proportional assist ventilation (PAV), a new mode for assist ventilation, allows the patient not only to trigger the ventilator but enables him to keep his breathing pattern. The basis of PAV is a positive feed back between patient and ventilator. PATIENTS AND METHOD: PAV was applied in 6 patients, who were under long-term ventilation and who were stable. The ventilator was adjusted to compensate for the endotracheal tube, different parts between 90 and 40% of resistance and elastance were assisted. Airway pressure, flow and tidal volume were measured. PAV was compared with pressure support ventilation (PSV). RESULT: No difference in blood gases were found in PAV as compared to PSV. Airway pressure were lower in PAV than in PSV (10.4 +/- 3.3 cm H2O vs. 18.8 +/- 5.9 cm H2O in PSV). Breathing frequency was higher (22.4 +/- 8.1 vs. 15.8 +/- 5.9 in PSV). CONCLUSION: The higher breathing frequencies in PAV were associated with the underlying diseases and resulted in a better synchronisation with the respiratory center output.
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