title: The components of an effective test dose prior to epidural block.
mesh_terms: D000328:Adult; D000775:Anesthesia, Spinal; D002045:Bupivacaine; D003975:Diazepam; D004837:Epinephrine / Q000627:therapeutic use; D005283:Fentanyl; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008012:Lidocaine; D008619:Mepivacaine; D009407:Nerve Block / Q000592:standards*; D011229:Preanesthetic Medication; D011343:Procaine / Q000031:analogs & derivatives
chemical_list: D011343:Procaine; C004616:chloroprocaine; D008012:Lidocaine; D008619:Mepivacaine; D003975:Diazepam; D005283:Fentanyl; D002045:Bupivacaine; D004837:Epinephrine