A Simple Method for Rapid Estimate of Pulmonary Venous Admixture

Chiarla, Carlo; Giovannini, Ivo; Siegel, John H.; Coleman, William P.; Boldrini, Giuseppe; Castagneto, Marco
December 1988
Angiology;Dec1988, Vol. 39 Issue 12, p1030
Academic Journal
Data from 2,298 measurements of pulmonary venous admixture (&Qdot;S/&Qdot;T) performed in 733 patients were analyzed and processed in order to develop a method for rapid and reliable estimation of &Qdot;S/&Qdot;T by a simplified approach. Formulae and charts were obtained, which are easily suitable for use in all settings, and permit estimation of &Qdot;S/&Qdot;T with an 85%–93% control of its variability (r2 = 0.85–0.93, p < 0.0001) simply on the basis of the measured arterial and central venous O2 tensions or saturations.


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