title: Another cause for failed epidural.
authors.forename: L H
authors.initials: LH
authors.lastname: Wee
mesh_terms: D000328:Adult; D015360:Analgesia, Epidural / Q000295:instrumentation*; D016362:Analgesia, Obstetrical / Q000295:instrumentation*; D002404:Catheterization / Q000295:instrumentation*; D004868:Equipment Failure; D005260:Female; D006801:Humans; D011247:Pregnancy