Patients should receive 100% O2 via a tightly fitting mask with reservoir or CPAP
mask as initial therapy.
As agreed with the National Poisons Centre, the following patient groups should
receive Hyperbaric Oxygen Therapy (HBO), preferably within six hours of exposure.
All patients who present with coma.
History of loss of consciousness
Neurological Deficit (Frank or on psychometric testing)
ECG abnormalities (ST changes or Arrhythmias)
Pregnant women (regardless of Maternal symptoms or COHb level)
