title: Clinical and MRI manifestations of nitrous oxide induced vitamin B12 deficiency: A case report.
abstract: A 50 year-old man was referred with history of acute ataxia and lower extremity paresthesia 10 days after general anesthesia with nitrous oxide. Cervical MRI showed long hypersignal lesion in posterior segment of the cord. Blood analysis revealed vitamin B12 deficiency. Nitrous oxide-induced myelopathy should be considered in patients who develop acute neurological manifestation after general anesthesia. It is recommended for physicians to think about symptoms and signs of B12 deficiency when evaluating patients in postoperative visits.
authors.affiliation: Department of Pharmacology, School of Medicine, Azad University, Kazerun Branch, Shiraz, Iran.
authors.forename: Anahid
authors.initials: A
authors.lastname: Safari
authors.forename: Farhad
authors.initials: F
authors.lastname: Emadi
authors.forename: Elham
authors.initials: E
authors.lastname: Jamali
authors.forename: Afshin
authors.initials: A
authors.lastname: Borhani-Haghighi
keywords: Ataxia; General Anesthesia; Nitrous Oxide; Spinal Cord; Vitamin B12 Deficiency