title: Upper gastrointestinal bleed associated with cholinesterase inhibitor use.
abstract: An 86-year-old man was admitted with a 3-day history of melaena and syncope. He was haemodynamically compromised and anaemic on presentation. His only medical history was mild Alzheimer's disease diagnosed 6 months prior. For this, he was on donepezil, a cholinesterase inhibitor (ChEI), with a recent dose increase 3 months earlier. After fluid resuscitation with packed red cells, an endoscopy was performed, which showed an acute duodenal ulcer. This was treated with a high-dose proton pump inhibitor. The patient recovered well and was discharged on donepezil with the addition of a gastro-protective proton pump inhibitor. In view of other absent risk factors of upper gastrointestinal haemorrhage, donepezil was the likely causative agent. ChEIs are associated with frequent side effects and increased hospitalisation due to central and peripheral increase in acetylcholine. With this case report, we review the literature of side effects related to ChEIs, where the mechanisms of action, complications and appropriate management are discussed.
authors.affiliation: Norfolk and Norwich University Hospital, Norwich, UK.
authors.forename: Khoon-Sheng
authors.initials: KS
authors.lastname: Kok
authors.affiliation: Norwich Medical School, University of East Anglia, Norwich, UK.
authors.forename: Yoon
authors.initials: Y
authors.lastname: Loke
authors.affiliation: Norfolk and Norwich University Hospital, Norwich, UK.
authors.forename: Jo
authors.initials: J
authors.lastname: Southgate
mesh_terms: D000369:Aged, 80 and over; D000544:Alzheimer Disease; D002800:Cholinesterase Inhibitors / Q000008:administration & dosage / Q000009:adverse effects*; D000077265:Donepezil; D004381:Duodenal Ulcer / Q000175:diagnosis* / Q000188:drug therapy*; D004724:Endoscopy / Q000379:methods; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced; D006801:Humans; D007189:Indans / Q000008:administration & dosage / Q000009:adverse effects*; D064747:Lansoprazole / Q000008:administration & dosage*; D008297:Male; D010880:Piperidines / Q000008:administration & dosage / Q000009:adverse effects*; D054328:Proton Pump Inhibitors / Q000008:administration & dosage*; D013575:Syncope / Q000139:chemically induced
chemical_list: D002800:Cholinesterase Inhibitors; D007189:Indans; D010880:Piperidines; D054328:Proton Pump Inhibitors; D064747:Lansoprazole; D000077265:Donepezil