A nasal mask for posterior rhinometry of each side of the nose separately.
A nasal mask consisting of a frame covered with a thin latex membrane allows one nostril to be closed by the application of light pressure with a finger. When the mask is connected to a pneumotachograph it is possible to measure the resistance of each side of the nose separately by posterior rhinometry.
D000403:Airway Resistance; D006801:Humans; D008365:Manometry; D008397:Masks; D009666:Nose / Q000502:physiology*