Here are 02-as-CH-abortive studies:
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1. Di Sabato F et al. Hyperbaric oxygen in chronic cluster headaches: influence on serotonergic pathways. Undersea & hyperbaric Medicine. 1997; 24(2): 117-22.
2. Gallagher RM et al. Analgesic use in cluster headache. Headache. 1996; 36(2): 105-7.
3. Pascual J et al. Preventive effects of hyperbaric oxygen in cluster headache. Headache. 1995; 35(5): 260-1.
4. Di Sabato F et al. Hyperbaric oxygen therapy in cluster headache. Pain. 1993; 52(2): 243-5.
5. Fogan L. Treatment of cluster headaches. A double-blind comparison of oxygen v air inhalation. Archives of Neurology. 1985; 42(4): 362-3.
This study (2002) does not mention the 02 flow rate used, but hypothesizes that the cooling effect is more important than the actual use of 02:
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"Titre du document / Document title
Cold room air inhalation to abort cluster headaches: an exploratory study
Auteur(s) / Author(s)
SUE MCLEOD Martha ; ANDRASIK Frank ; PACKARD Russell C. ; MILLER Bayard D. ;
Résumé / Abstract
Research has shown that inhalation of pure oxygen is effective in aborting cluster headache. This article advances the hypothesis that cooling is the critical ingredient behind the effectiveness of oxygen inhalation, rather than the oxygen concentration. To test this hypothesis, eight cluster headache participants used a device that delivered cooled room air as a means to abort headache attacks. Additionally, six of the subjects administered pure oxygen so that comparisons could be made to the air-cooling device. The proportion of cases in which subjects attained effective relief from cluster headache pain by use of the air-cooling device was significantly higher than the proportion of cases in which subjects did not attain effective relief from headache pain. There was no significant difference between the proportion of headaches relieved by oxygen and the proportion of headaches relieved by the air-cooling device. This study raises questions about the mechanisms of action of oxygen inhalation for treating cluster headache, and indicates that future clinical investigations into the use of cold room air for treating cluster headache pain are warranted.
Revue / Journal Title
The Journal of headaches and pain ISSN 1129-2369
Source / Source
2002, vol. 3, no1, pp. 33-36 [4 page(s) (article)]
Langue / Language
Anglais
Editeur / Publisher
Springer, Milano, ITALIE (2000) (Revue)
Localisation / Location
INIST-CNRS, Cote INIST : 27383, 35400011594448.0050
Copyright 2008 INIST-CNRS. All rights reserved"
And here is the latest from Dr. Goadsby (2008):
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"Oxygen Therapy Provides Benefits for Treatment of Cluster Headache: Presented at ANA
By Andrew N. Wilner, MD, FACP, FAAN
SALT LAKE CITY, Utah -- September 24, 2008 -- Inhaled oxygen therapy is effective for the treatment of acute cluster headache and should be considered a first-line treatment, according to research presented at the American Neurological Association (ANA) 133rd Annual Meeting.
Peter Goadsby, MD, Headache Center, University of San Francisco, San Francisco, California, presented the study findings here on September 22.
Cluster headache occurs in 0.1% of the population and is the worse kind of pain that people can experience, Dr. Goadsby said. Patients typically experience 1 to 8 headaches a day for 2 to 3 months and then are headache-free for the rest of the year.
Although oxygen therapy has long been touted for the treatment of acute cluster headache, there is only 1 controlled trial in the literature comprising a mere 19 patients to substantiate this claim, Dr. Goadsby observed. Obtaining reimbursement for oxygen therapy for acute cluster headache has been difficult owing to lack of its documented effectiveness, he said.
Dr. Goadsby and colleagues evaluated the efficacy of oxygen therapy in 109 adults who met the criteria of the International Headache Society for cluster headache. Recruitment was performed in conjunction with a cluster headache support group.
During each attack of cluster headache, patients were randomised to treatment using an identical-appearing gas cylinder containing either 100% oxygen or air for 4 separate cluster headaches occurring on different days.
The study was performed between March 2003 and April 2007. Patients who had previously received oxygen treatment were excluded.
A total of 150 headaches were tested with oxygen and 148 with placebo. When assessed after 15 minutes, 78% of the patients treated with 100% oxygen had complete resolution of their headaches, compared with 20% of those treated with air (P < .001). Patients tolerated the oxygen therapy well, Dr. Goadsby said.
He observed that oxygen treatment does not alter the frequency of cluster attacks but is used for the treatment of acute attacks.
Other therapies available include sumatriptan by injection and nasal sprays containing sumatriptan or zolmitriptan.
Dr. Goadsby acknowledged that the mechanism of action of oxygen in treating cluster headache remains unknown.
Now that oxygen therapy has been proven effective, Dr. Goadsby plans to do dose-ranging studies to find the minimal effective dose of oxygen that will be effective to treat acute cluster headache.
[Presentation title: A Randomized Placebo-Controlled Crossover Study of Oxygen in Acute Cluster Headache. Abstract M-93]"
Laurie