Device and method for tempering and humidifying gas, especially respiratory air

The invention relates to an apparatus and a method for ventilating a patient. The unprecedented ventilators and procedures a humidify the inspiratory flow between gas flow generator and the patient is undertaken. This has the disadvantage of the creation of unwanted dead space, and flow resistance in the ventilation area. To get around this, the invention proposes that humidification of respiratory gas flow generator perform at elevated pressure and temperature. In this case, a preferred apparatus with which the method can be also carried out as described.