1. Apparatus for delivering pressurized gas to the airway of a patent, said apparatus comprising; gas flow generator means for providing a flow of said gas; conduit means for delivery of said gas flow to the airway of said patient; pressure controller means cooperable with said gas flow generator means to provide for flow of said gas within said conduit means and within the airway of said patient at at least one pressure level; and reset circuit means for permitting said patient to substantially instantaneously reset said pressure controller means to provide said flow of gas at a predetermined reduced pressure after which said pressure controller means resumes provision of said flow of gas in a manner substantially similar to that provided prior to said reset.