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Published on: June 2, 2014
Normobaric hypoxia and nitroglycerin as trigger factors for migraine
G G Schoonman1, P S Sándor, R M Agosti
1Department of Neurology, Leiden University Medical Centre, the Netherlands. g.g.schoonman@lumc.nl
Normobaric hypoxia may trigger migraine attacks, with 42% of participants experiencing symptoms. However, results were not statistically significant, indicating a need for further research into hypoxia
Area of Science:
- Neurology
- Environmental Medicine
Background:
- Migraine prevalence is higher in high-altitude populations.
- Acute mountain sickness symptoms resemble migraine symptoms.
Purpose of the Study:
- To investigate if normobaric hypoxia can trigger migraine attacks.
- To compare hypoxia's effect with nitroglycerin (NTG) and placebo.
Main Methods:
- 16 migraine patients (with and without aura) underwent randomized, cross-over, double-dummy provocations: normobaric hypoxia, NTG, and placebo.
- Primary outcome: migraine attack occurrence within 8 hours, per International Headache Society criteria.
Main Results:
- Migraine attacks were provoked in 42% by hypoxia, 21% by NTG, and 14% by placebo.
- No significant differences were found between the groups (P = 0.197).
- Median time to attack onset was 5 hours.
Conclusions:
- The study suggests normobaric hypoxia may trigger migraine attacks, but the response rate to NTG was lower than expected.
- Further research is needed to confirm hypoxia's potency in triggering migraine attacks.
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