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By examining flows in the expiratory limb of a bias flow circuit, it is possible to measure tidal, entrained and spilt volumes during jet ventilation. Using this method on a canine model, tidal volume fell and minute volume rose when the respiratory rate rose from 12 to 200 breaths/min. The changes were compatible with a convective model of gas movement. Entrained volume remained a constant fraction of tidal volume and spilt volume fell as a fraction of jet volume as respiratory rate increased.

Type

Journal article

Journal

Acta Anaesthesiol Scand Suppl

Publication Date

1989

Volume

90

Pages

72 - 74

Keywords

Animals, Dogs, High-Frequency Jet Ventilation, Pulmonary Ventilation, Tidal Volume