METHOD AND SYSTEM OF SENSING AIRFLOW AND DELIVERING THERAPEUTIC GAS TO A PATIENT
Sensing airflow and delivering therapeutic gas to a patient. At least some of the example embodiments are methods including: titrating a patient with therapeutic gas during a period of time when a flow state of breathing orifices is in a first state, the titrating results in a prescription titration volume; and then delivering the prescription titration volume of therapeutic gas to the patient when the flow state of the breathing orifices is in a second state different than the first state, the delivering only to the breathing orifices open to flow.
1 . (canceled)
2 . A method comprising:
determining a prescription titration volume by:
receiving individually sensed airflow of a plurality of breathing orifices of a patient;
determining whether the breathing orifices are open to flow, the determining based on the individually sensed airflow of a plurality of the breathing orifices;
outputting a control signal arranged to cause a bolus of therapeutic gas to be provided only to each breathing orifice that is open to flow, the providing during each of a plurality of inhalations of the patient, each bolus has a volume;
receiving a measured oxygen saturation of the patient;
determining an adjusted set point volume for each bolus;
repeating the receiving individually sensed airflow, outputting, receiving a measured oxygen saturation and determining steps until the measured oxygen saturation of the patient resides within a predetermined range; and
calculating the prescription titration volume as a sum of the volumes of each bolus provided during an inhalation when the patient's measured oxygen saturation resides within the predetermined range.
3 . The method of claim 2 wherein receiving the individually sensed airflow further comprises:
receiving individually sensed airflow of each of a first nare and a second nare of the patient.
4 . The method of claim 2 :
wherein calculating the prescription titration volume further comprises calculating during a first state wherein both nares of the patient are open to flow; and
the method further comprises, after determining the prescription titration volume, delivering therapeutic gas in a second state wherein only one nare is open to flow, the delivering in the second state by providing the prescription titration volume only to the nare open to flow.
5 . The method of claim 2 :
wherein calculating the prescription titration volume further comprises calculating during a first state wherein only one nare of the patient is open to flow; and
the method further comprises, after determining the prescription titration volume, delivering therapeutic gas in a second state wherein both nares are open to flow, the delivering in the second state by providing a first non-zero portion of the prescription titration volume to a first nare and providing a second portion of the prescription titration volume to a second nare.
6 . A method of determining a prescription titration volume, the method comprising:
receiving individually sensed airflow of a plurality of breathing orifices of a patient;
determining whether the breathing orifices are open to flow, the determining based on the individually sensed airflow of a plurality of the breathing orifices;
outputting a control signal arranged to cause a bolus of therapeutic gas to be provided only to each breathing orifice that is open to flow, the providing during each of a plurality of inhalations of the patient, each bolus has a volume;
receiving a measured oxygen saturation of the patient;
determining an adjusted set point volume for each bolus;
repeating the receiving individually sensed airflow, outputting, receiving a measured oxygen saturation, and determining steps until the measured oxygen saturation of the patient resides within a predetermined range; and
calculating the prescription titration volume as a sum of the volumes of each bolus provided during an inhalation when the patient's measured oxygen saturation resides within the predetermined range.
7 . The method of claim 6 wherein receiving the individually sensed airflow further comprises:
receiving individually sensed airflow of each of a first nare and a second nare of the patient.
8 . The method of claim 6 :
wherein calculating the prescription titration volume further comprises calculating during a first state wherein both nares of the patient are open to flow; and
the method further comprises, after determining the prescription titration volume, delivering therapeutic gas in a second state wherein only one nare is open to flow, the delivering in the second state by providing the prescription titration volume only to the nare open to flow.
9 . The method of claim 6 :
wherein calculating the prescription titration volume further comprises calculating during a first state wherein only one nare of the patient is open to flow; and
the method further comprises, after determining the prescription titration volume, delivering therapeutic gas in a second state wherein both nares are open to flow, the delivering in the second state by providing a first non-zero portion of the prescription titration volume to a first nare and providing a second portion of the prescription titration volume to a second nare.