496: VASOPRESSORS IN REFRACTORY STATUS EPILEPTICUS–RISK FACTORS AND CLINICAL IMPACT. Issue 12 (December 2015) - Tabibzadeh, Navid; Muhktar, Umer; Shoukat, Umer; Shah, Syed; Levin, Ilya; Fernandez, Andres; Rincon, Fred; Vibbert, Matthew