title: The catheter impact on epidural analgesia.
mesh_terms: D000767:Anesthesia, Epidural / Q000295:instrumentation*; D001424:Bacterial Infections / Q000209:etiology; D002404:Catheterization / Q000009:adverse effects / Q000295:instrumentation*; D004824:Epidural Space / Q000033:anatomy & histology; D006801:Humans