The Toxicology committee has developed a new Nitrous Oxide misuse CPG.
The Key points for the CPG are
- Chronic high-level recreational N2O exposure impedes vitamin B12 function, leading to neurological dysfunction and rarely myelosuppression
- Patients often present with symptoms and signs consistent with subacute combined degeneration of the spinal cord
- Measured vitamin B12 may be normal and does not reflect ‘functional vitamin B12’ concentration
- Discontinuation of N2O and administration of intramuscular vitamin B12 and oral methionine are the mainstays of management