O2, commonly referred to as “oxygen”, or as dioxygen by chemists, is made up of two oxygen atoms.
Under normal temperature and pressure conditions oxygen is a gas, making up about 21% of the air we breathe.
The result it provides in the treatment of Cluster Headache attacks is likely linked to two effects:
- Oxygen is a vasoconstrictor. It will therefore fight against vasodilatation during the attack.
- Like sumatriptan, it reduces the amount of CGRP at the trigeminal level. (CGRP is present in abnormal amounts during an attack).
In addition, oxygen is compressed in the cylinder. By expanding when the valve is opened, it cools down.
It is not impossible that this cooling may contribute to vasoconstriction (“ice cube” effect) but this may be a placebo effect.
For optimal effectiveness, the flow rate should be 12 to 15 litres per minute.
It is advisable to start treatment as soon as possible, at the first signs of an attack.
Side effects vary depending on the individual:
- dryness of the upper respiratory tract,
- slight feeling of drunkenness.
These effects are generally not very pronounced and may depend on the equipment used.
Oxygen therapy, as used in the treatment of cluster headache, can be considered non-toxic.
However, there are risks with 100% oxygen above two hours of continuous use.
- Patients with COPD should consult their pulmonologist before any oxygen therapy treatment.
Read the complete file to find out about drug interactions!