Hey Dodge,
Great question... Unfortunately, your doctor is correct. There are no gold standard, i.e., randomized, double blind, placebo controlled, crossover studies of oxygen therapy as a cluster headache abortive to prove oxygen flow rates that support hyperventilation are significantly more effective than the traditional 7 to 9 liters/minute suggested by Dr. Lee Kudrow in the early 80s or 15 liters/minute suggested by Dr. Todd Rozen in 2004.
What's even more disappointing is the pilot study of the demand valve method of oxygen therapy for fast aborts of cluster headache we worked so hard to fund for Dr. Rozen at the Geisinger Center for Clinical Studies, Wilkes-Barre, PA is unlikely to complete due to a lack of study subjects.
Moreover, the leading neurologists who specialize in the treatment of cluster headache patients at the major headache centers, are very conservative when it comes to new treatments for cluster headache and will only consider them when the medical evidence of efficacy and safety is incontrovertible... i.e., one or more IRB approved gold standard studies.
The good news, if you can just get the Rx for oxygen therapy for any flow rate, is you can go out on the Internet and buy your own 0-25 liter/minute oxygen regulator for $25 to $60 or better yet, a 0-60 liter/minute oxygen regulator for $195. Either of these regulators and an O2PTIMASK™ kit from the CH.com store at the left and you'll be in good shape. The Rx will help cover the medical insurance cost of the oxygen contents.
If that fails, you can still go down to the local Harbor Freight Tools outlet and lease a cylinder of welder's O2 and buy one of their $25 welder's oxygen regulators.
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This type of oxygen regulator is outlet pressure rated in PSI, not flow rate in liters/minute, so you'll need to do a little trial and error before you find the most effective regulated pressure to use. That usually takes only a few minutes...
The out of pocket cost for the oxygen contents using welder's is O2 roughly the same as co-pay with medical insurance for medical oxygen. As long as the oxygen cylinder is clean, there's no difference between welder's O2 and medical grade oxygen... Most of the oxygen fill facilities fill both types of oxygen cylinder from the same liquid oxygen (LOX) tanks.
I've been a vocal proponent of oxygen therapy at flow rates that support hyperventilation here at CH.com and elsewhere since 2006 when I joined this forum.
I developed the procedures for this method of oxygen therapy shortly after I was diagnosed as being a chronic CH'er in 2005 as I was burned out on imitrex and found the traditional preventatives largely ineffective and unsatisfactory due to the onerous side effects...
The efficacy of this method of oxygen therapy was 100% for me and I was averaging 6 to 8 high-kip CH a day during high cycles... In 2007, Michael Berger, Royce Fishman and I modified my initial procedures to work with an oxygen demand valve Royce provided. We then started our own clinical trial of this method of oxygen therapy with seven volunteers from here at CH.com... Six men, one woman, six chronic and one episodic CH'ers.
The results were amazing... Abort times at flow rates that support hyperventilation were three to four times faster than aborts at a flow rate of 15 liters/minute. The seven participants collected data on 366 aborts over an eight week period with this method of oxygen therapy... The efficacy was 99% and the average abort time to a pain free state across pain levels 3 through 9, was 7 minutes... There were no adverse reactions and there were no side effects.
Unfortunately... This wasn't a gold standard, IRB approved study conducted by a prestigious medical institution and noted neurologist so this study and its incredible results carry absolutely no weight with the major headache centers or any neurologist...
Now for the really great news... There's another very effective method of controlling cluster headaches, but this method is totally under the radar for neurologists and is only recognized by Integrative/Homeopathic physicians and a few endocrinologists... Vitamin D3 therapy.
It turns out that most CH'ers are vitamin D3 deficient and that deficiency is contributing to the frequency and severity of their CH. The best course of action is to see your PCP and ask for the lab test for 25(OH)D, the serum level metabolite of vitamin D3. The normal reference range for 25(OH)D is 30-100 ng/mL, but we've had CH'ers with active CH test as high as 42 ng/mL. If your results come back < 42 ng/mL, start the anti-inflammatory regimen...
I developed the anti-inflammatory regimen with 10,000 IU/day vitamin D3 in early October of 2010... 24 hours after I started this regimen I was pain free of my CH.
I've remained pain free ever since with the exception of an intentional stress test of my 25(OH)D reserves last November, when I stopping this regimen completely... Eight days later I was rewarded with a classic CH at pain level six... I restarted the anti-inflammatory regimen and am still PF.
The basic regimen of vitamin and mineral supplements is shown below by brand from Costco... It costs $35 or 20 cents a day for a five-month supply.
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Take two of each a day as shown below. You can take them in the morning or evening with or without food...
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I've been collecting efficacy data on this method of controlling/preventing CH since 10 December 2010 from here at CH.com and also at ClusterBusters...
The raw efficacy to date is better than 72% with 100 out of 133 CH'ers finding this method of preventing CH really works... You can read what other CH'ers are saying about their experience with this regimen at the following link:
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This thread is now 30 pages long and it's been viewed over 42,600 times since I started it... That's over 80 times a day...
Take care and please keep us posted...
V/R, Batch