Apparatus and method for supplying a respiratory gas

Apparatus for supplying a respiratory gas to a patient, comprising:

• a signal input device configured to receive signals indicative of the patient's instantaneous breathing activity and physiological state;
• an extraction device configured to dynamically generate data field entries in accordance with predetermined signal analysis procedures performed on the signals received by the signal input device and in accordance with comparisons performed between dynamically updated reference data and the signals received by the signal input device;
• and
• a pressure signal generator to generate a pressure control signal, wherein the pressure signal generator is configured to generate the pressure control signal based on at least some of the dynamically generated data field entries that are indicative of respiration phase and physiological state.