[Comparison of hyperbaric and isobaric bupivacaine for spinal anesthesia].
D000775:Anesthesia, Spinal / Q000379:methods*; D002045:Bupivacaine / Q000008:administration & dosage*; D006552:Hernia, Inguinal / Q000601:surgery; D006801:Humans; D013748:Tetracaine / Q000008:administration & dosage*
D013748:Tetracaine; D002045:Bupivacaine