A failed spinal following an epidural block.
D000328:Adult; D000767:Anesthesia, Epidural; D000773:Anesthesia, Obstetrical; D000775:Anesthesia, Spinal; D002045:Bupivacaine; D002585:Cesarean Section; D005260:Female; D006801:Humans; D008012:Lidocaine; D011247:Pregnancy
D008012:Lidocaine; D002045:Bupivacaine