Pulmonary Embolism CTPA revealing massive embolus in the main and left pulmonary arteries. Acute hypoxemia from pulmonary embolism and ECHO revealing McConnell’s sign ECHO: McConnell’s sign– RV free wall akinesia and preserved apical function. Bubble study: + intra-cardiac shunt. Given rTPA– improved RV function. Echo PE Bubble TPA from PACCMUS on Vimeo.