期刊
MEDICINE
卷 99, 期 18, 页码 -出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MD.0000000000019926
关键词
proton Nitrous Oxide Subacute Combined Degeneration
Rationale: Nitrous oxide (N2O), commonly known as laughing gas, is being increasingly abused by young people as a recreational drug; this can subsequently result in myelopathy and peripheral neuropathy, however, in China, few cases of neurologic deterioration by N2O abuse have been reported. Patient concerns: Herein, we present 2 patients who developed progressive limb weakness, numbness, and ataxia. Both of them had recreationally inhaled N2O intermittently for a long time. Diagnosis: Subacute combined degeneration (SCD) based on myelopathy and polyneuropathy after N2O abuse. Interventions: The 2 patients were treated with cessation of N2O inhalation, methylcobalamin capsule 500 mu g tid (ter in die, which means 3 times a day), and compound vitamin B 1 tablet tid p.o.(per os, which means taken orally) for 1 month. Outcomes: The symptoms of altered sensation and the patients' gait improved significantly. Lessons: The 2 cases raise awareness of the important mechanisms of N2O neurotoxicity, and clinicians should be made fully aware of such substance-related diseases. The incidence of N2O -induced neurotoxicity is insufficiently recognized and should be considered as an important cause of SCD, especially in adolescents with undifferentiated weakness and abnormal sensation; this is essential because serious complications such as irreversible paralysis can result from the absence of early diagnosis and treatment.
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