• Acta Anaesthesiol Scand · Feb 2001

    Review

    Prone position improves gas exchange--but how?

    • M Mure and S G Lindahl.
    • Department of Anaesthesiology and Intensive Care, Karolinska Hospital and Institute, Stockholm, Sweden. Margareta.Mure@kirurgi.ki.se
    • Acta Anaesthesiol Scand. 2001 Feb 1;45(2):150-9.

    Abstract* Mechanically ventilated patients with severe acute lung insufficiencies dramatically improve their gas exchange when treated in the prone position. * ventilation heterogeneity is greater in the supine then in the prone position during CMV. * the dominant dorsal Q while supine is not turned into a dominant ventral Q in the prone position. * in the presence of an abdominal distension, the prone position more clearly improves gas exchange than at normal abdominal pressures. * CPAP enhances the dominant dorsal lung perfusion while supine. In the prone position lung perfusion is more uniform. * V/Q matching is improved in the prone position during CMV.

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