471 The major effect of venous air embolism is the obstruction of the right ventricular outflow tract, or of the pulmonary arterioles, by a combination of air bubbles and fibrin. Although the diagnosis could be made by X-ray or echocardiography, CT scanning may be the most sensitive diagnostic take a look at, displaying a unique picture of spherical or mirror-shaped densities localized ventrally within the supine patient. In a multivariate analysis of 570 sufferers with PE, the presence of…