title: Another cause of failure of patient-controlled analgesia.
authors.forename: L D
authors.initials: LD
authors.lastname: Caldicott
authors.forename: B
authors.initials: B
authors.lastname: Tehan
authors.forename: S
authors.initials: S
authors.lastname: Jayaratnasingam
mesh_terms: D000328:Adult; D016058:Analgesia, Patient-Controlled / Q000295:instrumentation*; D004867:Equipment Design; D004868:Equipment Failure; D006801:Humans; D008297:Male; D010149:Postoperative Pain / Q000188:drug therapy*; D013594:Syringes