Liu, S Epinephrine prolongs duration of subcutaneous infiltration of local anesthesia in a dose-related manner. Correlation with magnitude of vasoconstriction. [electronic resource] - Regional anesthesia - 378-84 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0146-521X Subjects--Topical Terms: Adrenergic Agonists--administration & dosageAdultAnalgesiaAnesthesia, LocalAnesthetics, Local--administration & dosageBupivacaine--administration & dosageCapillaries--drug effectsDose-Response Relationship, DrugDouble-Blind MethodEpinephrine--administration & dosageFemaleHumansInjections, SubcutaneousLaser-Doppler FlowmetryLidocaine--administration & dosageMaleSensation--drug effectsSkin--blood supplyTime FactorsVasoconstrictionVasoconstrictor Agents--administration & dosageVasodilation--drug effects