This can lead to the collapse of small airways and also make it more difficult for you to breathe.
"I think you may have some form of hyperresponsive airways," he said.
The patients were given equipment to test lung capacity and the resistance of airways to taking in a breath.
Perhaps most notably, he was chief executive of British Airways from 1996 to 2000.
They were supposed to have come with the compliments of British Airways.
The tissues at the top of airways touching each other, causing vibrations.
There are a variety of artificial airways which can be used to keep a pathway between the lungs and mouth/nose.
However, a person suffering from the disease needs proper nutrition, hydration, and maintenance of clear airways.
For children under 2, American's current rules match those of British Airways.
A history of obstructive airways or cardiac disease can shed some light on possible underlying causes.