348: CONTACT FACTOR XI INHIBITION IN A SIMULATED ECMO CIRCUIT WITH HUMAN WHOLE BLOOD. (15th December 2022) - Meyer, Andrew; Thorpe, Catherine; Elkhalili, Alia; Fraker, Tamara; Cancio, Tomas; Terrazas, Irasema; Rocha, Jeanette; Willis, Robert; Cap, Andrew; Tucker, Erik; McCarty, Owen