Ebert, J P Circulatory responses to laryngoscopy: the comparative effects of placebo, fentanyl and esmolol. [electronic resource] - Canadian journal of anaesthesia = Journal canadien d'anesthesie May 1989 - 301-6 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0832-610X Standard No.: 10.1007/BF03010769 doi Subjects--Topical Terms: Adrenergic beta-Antagonists--pharmacologyAnesthesia, InhalationAnesthesia, IntravenousBlood Pressure--drug effectsDiseaseElectrocardiographyFentanyl--pharmacologyHeart Rate--drug effectsHumansIntubation, IntratrachealLaryngoscopyPlacebosPropanolamines--pharmacologyRandom Allocation