Found this out there that mentions O2 after 10-20mins of use?
Is this just wrong?
Snippet:
"However, prior to initiating this therapy, patients must
obtain clearance from their primary care physician since
serious lung disease and other conditions can make oxygen
therapy unsafe or inappropriate. In addition, such oxygen
therapy should not be used for more than a maximum of
10-20 minutes at a single setting."
From the newsletter Headliner, 2004, Issue 33, published
by the Michigan Head-Pain & Neurological Institute.
Reprinted with permission.
"High Oxygen Flow Rates for Cluster Headache"
by Todd D. Rozen, M.D., Neurologist
As discussed in previous issues of the Headliner, cluster
headache patients require effective abortive therapy due to
the extreme intensity of their pain. The two most effective
cluster abortives are injectable sumatriptan and inhaled
oxygen. However, since a large percentage of cluster
sufferers are cigarette smokers and at high risk for
coronary artery disease, many cannot be treated with the
various triptan medications. In these cases, oxygen therapy
becomes the preferred option.
Oxygen, the safest of all cluster therapies, is usually
prescribed based on a landmark study by Dr. Lee Kudrow.
In this study, patients were instructed to use 100% oxygen
via a nonrebreather face mask at 7-10 liters/minute.
Although usually effective, a certain subset of cluster
patients do not achieve relief from this treatment. The
author hypothesized that treating patients with higher flow
rates of oxygen, up to 15 liters/minute, might provide relief
to those sufferers who had not responded to standard
oxygen therapy regimens.
Because MHNI has many intractable cluster patients, it was
decided that a higher dose of oxygen therapy would be
utilized in a few patients. Several important cases recently
reported in the medical literature, found this therapy to be
quite effective in patients who previously did not respond to
lower dose oxygen inhalation.
MHNI's experience indicates patients who do not respond to
the standard flow rates should be given the opportunity to
use up to 15 liters/minute. However, prior to initiating this
therapy, patients must obtain clearance from their primary
care physician since serious lung disease and other
conditions can make oxygen therapy unsafe or
inappropriate. In addition, such oxygen therapy should not
be used for more than a maximum of 10-20 minutes at a
single setting.
The basis by which oxygen turns off a cluster headache is
unknown at this time. Oxygen's constrictive effect on
cerebral blood vessels may play a significant role.
Further study and a larger sample size is needed to provide
conclusive evidence regarding the usefulness of high
oxygen flow rates for difficult-to-treat cluster headache
patients.
Headliner is published and privately distributed by the
Michigan Head-Pain & Neurological Institute for
informational use by our patients and friends. Rights to
reproduction belong exclusively to Michigan Head-Pain &
Neurological Institute. For additional copies or further
information contact:
Jeffrey Pingel, Ph.D., or Scott Madden, Editors, Headliner
Michigan Head-Pain & Neurological Institute
3120 Professional Drive, Ann Arbor, MI 48104
Last modified: 2004