title: Caudal anesthesia complicated by intraosseous injection in a patient with ankylosing spondylitis.
mesh_terms: D000328:Adult; D000763:Anesthesia, Caudal / Q000009:adverse effects*; D000767:Anesthesia, Epidural / Q000009:adverse effects*; D001853:Bone Marrow; D002045:Bupivacaine / Q000008:administration & dosage; D004837:Epinephrine / Q000008:administration & dosage; D006801:Humans; D007267:Injections; D007431:Intraoperative Complications / Q000209:etiology; D008297:Male; D011677:Punctures; D012640:Seizures / Q000209:etiology; D013167:Spondylitis, Ankylosing
chemical_list: D002045:Bupivacaine; D004837:Epinephrine