Casati, A Effects of spinal needle type on lateral distribution of 0.5% hyperbaric bupivacaine. [electronic resource] - Anesthesia and analgesia Aug 1998 - 355-9 p. digital Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0003-2999 Standard No.: 10.1097/00000539-199808000-00022 doi Subjects--Topical Terms: AdultAgedAnesthesia, Spinal--instrumentationAnesthetics, Local--administration & dosageBupivacaine--administration & dosageDouble-Blind MethodHumansInjections, Spinal--instrumentationLeg--surgeryMiddle AgedNeedlesProspective StudiesSensation