Autotitrating method and apparatus

A method of controlling positive airway pressure therapy, comprising:

• providing gas to an airway of a patient at a pressure;
• determining a flow of the gas provided to the airway of the patient;
• and
• adjusting the pressure of the gas based in part on determining that the flow satisfies a minimum flow condition over at least a first duration of time and that the flow does not satisfy the minimum flow condition during a second duration of time.

A positive airway pressure therapy apparatus comprising:

• a blower configured to provide a flow of gas to an airway of a patient at a pressure;
• a pressure regulator configured to adjust the pressure;
• a pressure sensor positioned in a flow path of the gas;
• and
• a controller configured to:
• determine the flow of the gas based on pressure measured by the pressure sensor;
• and
• control the pressure regulator to adjust the pressure of the gas in response to a determination that the flow satisfies a minimum flow condition over at least a first duration of time and that the flow does not satisfy the minimum flow condition during a second duration of time.