Linde Aktiengesellschaft

Peter L Batcheller

Royce S Fishman

Michael Berger

Methods for easing the duration of pain experienced by patients during a cluster headache are disclosed including providing a high-pressure source of substantially pure oxygen, applying the oxygen to the patient so that inhalation by the patient is substantially limited to inhalation of the substantially pure oxygen, inhaling the substantially pure oxygen in order to cause hyperventilation by the patient, and continuing hyperventilation at least until the patient achieves respiratory alkalosis, hypocapnia hyperoxia, and until the pain is terminated. The method preferably includes using a demand valve having a predetermined manual purge flow rate and a variable output flow rate to the user based on respiratory demand.

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Lake Ridge, VA, United States of America

Peter L Batcheller