title: Total spinal anesthesia during epidural anesthesia.
mesh_terms: D000767:Anesthesia, Epidural / Q000009:adverse effects* / Q000379:methods; D000775:Anesthesia, Spinal; D000777:Anesthetics / Q000494:pharmacology; D006801:Humans; D013116:Spinal Cord / Q000187:drug effects
chemical_list: D000777:Anesthetics