Patient ventilator, method of ventilating an airway of a patient, and associated computer program product

A method of ventilating an airway of a patient, said method comprising:

• ventilating said airway of said patient in accordance with a series of respiration cycles, each respiration cycle including a delivery of a main volume of fresh respiratory gas into said airway, followed by an evacuation of a corresponding main volume of used respiratory gas;
• and
• during a corresponding one of said respiration cycles, ventilating said airway of said patient in accordance with a series of subcycles, wherein each subcycle includes a delivery of an auxiliary volume of fresh respiratory gas into the airway, followed by an evacuation of a corresponding auxillary volume of used respiratory gas, the auxiliary volume being smaller than, and distinct from, the main volume.

A computer program product stored in a non-transitory memory of a controller further having a processor, the computer program product having computer readable instructions which, when executed by the processor controls a patient ventilator, including the steps of:

• ventilating a conduit of said patient ventilator in accordance with a series of respiration cycles, each respiration cycle including a delivery of a main volume of fresh respiratory gas into said conduit, followed by an evacuation of a corresponding main volume of used respiratory gas;
• and during a corresponding one of said respiration cycles, ventilating said respiration cycle including the delivery of the main volume of fresh respiratory gas into said conduit of said patient in accordance with a series of subcycles, wherein each subcycle includes a delivery of an auxiliary volume of fresh respiratory gas into the respiration cycle including the delivery of the main volume of fresh respiratory gas into said conduit, followed by an evacuation of a corresponding auxillary volume of used respiratory gas, the auxiliary volume of fresh respiratory gas being smaller than, and distinct from, the main volume of respiratory gas.