Emerging treatments for cluster headache: hopes and disappointments....here.RECENT FINDINGS:In cluster headache acute treatment, delivery systems like Demand Valve Oxygen or nonrebreather-type masks could enhance the effectiveness of inhaled oxygen therapy....
Airway efficiency during the use of scuba diving mouthpieces.... RESULTS: The connecting airway between the demand valve and mouthpiece was found to be a major limiting factor in airway efficiency....
Recreational scuba diving, patent foramen ovale and their associated risks. swiss med wkly 131invented a self-contained underwater breathing apparatus (scuba) with a demand valve, sensing the ambient pressure under water and automatically delivering the amount of air a diver needed at a par-ticular depth....
A demand valve device decreases exhaust nitric oxide and nitrogen dioxide by nitric oxide inhalation with a nasal cannula in the human ...patients' quality of life and decrease pollution risks to medical personnel, we tested the usefulness of a nitric oxide (NO) inhalation system consisting of a nasal cannula and a demand valve in an open circuit system....
