Overview Functional Endoscopic Sinus Surgery Study Status: Recruiting Trial end date: 2022-05-01 Target enrollment: Participant gender: Summary The aim of this study is to evaluate the effect of the addition of epinephrine to bilateral real time ultrasound guided pterygopalatine ganglion blocks on intra-operative bleeding and blood loss during functional endoscopic sinus surgery (FESS). Phase: Phase 1/Phase 2 Details Lead Sponsor: University of FloridaTreatments: BB 1101BupivacaineDexamethasoneDexamethasone acetateEpinephrineEpinephryl borateRacepinephrine