According to some embodiments, there is provided a breath monitoring device and system that includes a patient interface unit, adapted to be positioned on the patient head, said patient interface unit comprises a cannula, adapted to collect a sample of exhaled breath from a patient and a platform unit which includes: i. one or more CO2 sensors adapted to sense CO2 levels in the sample ii. a pump adapted to transfer the sample from the cannula to the one or more CO2 sensors and iii. a communication unit adapted to wirelessly transmit data corresponding to the CO2 levels to a remote analyzing unit.
