Real-time continuous estimation of gas exchange by dual oximetry.

Autor: Räsänen, J., Downs, J., Malec, D., DeHaven, B., Garner, W., Räsänen, J, Downs, J B, Malec, D J, Garner, W L
Zdroj: Intensive Care Medicine; Feb1988, Vol. 14 Issue 2, p118-122, 5p
Abstrakt: We designed a ventilation-perfusion index (VQI) to estimate venous admixture (Qsp/Qt) in a real-time fashion by simultaneous pulse and pulmonary artery oximetry in 17 patients with acute respiratory failure. Changes in Qsp/Qt were produced by altering the level of continuous positive airway pressure. VQI correlated well with Qsp/Qt (r = 0.78). This contrasts with the poor correlation found between Qsp/Qt and the commonly used oxygen tension based indices such as PaO2/FIO2 (r = -0.51), PaO2/PAO2 (r = 0.47), and PAO2-PaO2 (r = 0.23). The use of dual oximetry to derive a VQI appears to be a reliable and accurate method for real-time assessment of pulmonary gas exchange in patients with acute respiratory failure. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: