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Angiology
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A Simple Method for Rapid Estimate of Pulmonary Venous Admixture

Carlo Chiarla

Center of Study for the Physiopathology of Shock, CNR, Department of Surgical Clinic, Catholic University, Rome, Italy

Ivo Giovannini

Center of Study for the Physiopathology of Shock, CNR, Department of Surgical Clinic, Catholic University, Rome, Italy

John H. Siegel

From the M.I.E.M.S.S. and Departments of Surgery and Pathology, University of Maryland, Baltimore, Maryland

William P. Coleman

From the M.I.E.M.S.S. and Departments of Surgery and Pathology, University of Maryland, Baltimore, Maryland

Giuseppe Boldrini

Center of Study for the Physiopathology of Shock, CNR, Department of Surgical Clinic, Catholic University, Rome, Italy

Marco Castagneto

Center of Study for the Physiopathology of Shock, CNR, Department of Surgical Clinic, Catholic University, Rome, Italy

Data from 2,298 measurements of pulmonary venous admixture (QS/QT) per formed in 733 patients were analyzed and processed in order to develop a method for rapid and reliable estimation of QS/QT by a simplified approach. Formulae and charts were obtained, which are easily suitable for use in all settings, and permit estimation of QS/QT with an 85%-93% control of its varia bility (r2 = 0.85-0.93, p < 0.0001) simply on the basis of the measured arterial and central venous O2 tensions or saturations.

Angiology, Vol. 39, No. 12, 1030-1035 (1988)
DOI: 10.1177/000331978803901205
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