title: [Test dose for epidural anesthesia in patients treated with beta-blockaders].
abstract: Two cases are reported, demonstrating the difficulty to verify the lack of inadvertent intravascular injection of local anaesthetic during epidural anaesthesia in patients under beta-blockers. The tachycardia usually elicited by intravascular injection of a local anaesthetic-adrenaline mixture does not occur in these patients. The alternative consists in measuring blood pressure at the second minute after a test injection.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D000368:Aged; D000369:Aged, 80 and over; D000767:Anesthesia, Epidural; D000779:Anesthetics, Local / Q000008:administration & dosage*; D004837:Epinephrine / Q000008:administration & dosage; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D000319:Adrenergic beta-Antagonists; D000779:Anesthetics, Local; D004837:Epinephrine
vernacular_title: Dose-test pour anesthésie péridurale chez les patients traités par bêta-bloquants.