title: Delayed blockage in an extradural catheter.
mesh_terms: D000328:Adult; D000767:Anesthesia, Epidural / Q000009:adverse effects / Q000295:instrumentation*; D000773:Anesthesia, Obstetrical / Q000295:instrumentation*; D002404:Catheterization / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011247:Pregnancy