A system for delivering oxygen to a patient during a manual mask ventilation process, the system comprising: a nasal cannula 20 comprising a first lumen 22 to convey oxygen from a pressurized oxygen source 60 to the patient's nares, a second lumen 24, a pressure sensor 30 in communication with the second lumen 24, the pressure sensor 30 configured to determine an intra-nasal pressure value; an electronic oxygen flow valve 40 in communication with a processor 50, the electronic oxygen flow valve 40 between the pressurized oxygen source 60 and the first lumen 22 of the nasal cannula 20; a mask 70 to be positioned over the nasal cannula 20, nose and lips of the patient, the mask 70 for manually delivering oxygen to the patient, the mask 70 configured to, when in place, create a seal between a face of the patient and the mask 70 such that oxygen is routed into lungs of the patient; the processor 50 programmed to receive the intra-nasal pressure value from the pressure sensor 30 in communication with the second lumen 24; the processor 50 programmed to compare the intra-nasal pressure value to a pre-determined oxygen flow activation threshold pressure value; the processor 50 programmed to adjust the electronic oxygen flow valve 40 to deliver a pre-determined high oxygen flow through the first lumen 22 when the processor 50 determines the intra-nasal pressure value is greater than the pre-determined oxygen flow activation threshold pressure value.; wherein the processor 50 is further programmed to, after the processor 50 has adjusted the electronic oxygen flow valve 40 to deliver the pre-determined high oxygen flow through the first lumen 22, compare the intra-nasal pressure value to the pre-determined oxygen flow activation threshold pressure value, wherein the processor 50 is further programmed to adjust the electronic oxygen flow valve 40 to turn off the pre-determined high oxygen flow through the first lumen 22 when the processor 50 determines the intra-nasal pressure value is lower than a predetermined low pressure threshold; and characterized in that the system further comprises that the nasal cannula 20 is having a third lumen 26, and wherein the system further comprises a capnometry device to measure an end-tidal CO 2 value, the capnometry device in connection with the third lumen 26 of the nasal cannula 20, and wherein the processor 50 is further programmed to receive an end-tidal CO 2 measurement from the capnometry device after the processor 50 has adjusted the electronic oxygen flow valve 40 to turn off the pre-determined high oxygen flow through the first lumen 22. a nasal cannula 20 comprising a first lumen 22 to convey oxygen from a pressurized oxygen source 60 to the patient's nares, a second lumen 24, a pressure sensor 30 in communication with the second lumen 24, the pressure sensor 30 configured to determine an intra-nasal pressure value; an electronic oxygen flow valve 40 in communication with a processor 50, the electronic oxygen flow valve 40 between the pressurized oxygen source 60 and the first lumen 22 of the nasal cannula 20; a mask 70 to be positioned over the nasal cannula 20, nose and lips of the patient, the mask 70 for manually delivering oxygen to the patient, the mask 70 configured to, when in place, create a seal between a face of the patient and the mask 70 such that oxygen is routed into lungs of the patient; the processor 50 programmed to receive the intra-nasal pressure value from the pressure sensor 30 in communication with the second lumen 24; the processor 50 programmed to compare the intra-nasal pressure value to a pre-determined oxygen flow activation threshold pressure value; the processor 50 programmed to adjust the electronic oxygen flow valve 40 to deliver a pre-determined high oxygen flow through the first lumen 22 when the processor 50 determines the intra-nasal pressure value is greater than the pre-determined oxygen flow activation threshold pressure value.; wherein the processor 50 is further programmed to, after the processor 50 has adjusted the electronic oxygen flow valve 40 to deliver the pre-determined high oxygen flow through the first lumen 22, compare the intra-nasal pressure value to the pre-determined oxygen flow activation threshold pressure value, wherein the processor 50 is further programmed to adjust the electronic oxygen flow valve 40 to turn off the pre-determined high oxygen flow through the first lumen 22 when the processor 50 determines the intra-nasal pressure value is lower than a predetermined low pressure threshold; and characterized in that the system further comprises that the nasal cannula 20 is having a third lumen 26, and wherein the system further comprises a capnometry device to measure an end-tidal CO 2 value, the capnometry device in connection with the third lumen 26 of the nasal cannula 20, and wherein the processor 50 is further programmed to receive an end-tidal CO 2 measurement from the capnometry device after the processor 50 has adjusted the electronic oxygen flow valve 40 to turn off the pre-determined high oxygen flow through the first lumen 22.