Patent ID: 8728001

Claim:
A nasal capnographic pressure monitoring system comprising: a nasal cannula having at least one lumen; a capnometer for measuring carbon dioxide within the nasal cannula and for generating a time series of carbon dioxide exhaled through the nose of the patient; a pressure transducer mounted in communication with the capnometer for detecting pressure within at least one lumen of the nasal cannula; and a processor for outputting a time series of the nasal pressure in combination with the time series of carbon dioxide, the processor programmed to: compare the output of at least one component of the time series of the nasal pressure to the output of at least one component of the time series of carbon dioxide; compare the output of at least one inspiratory component of the time series of the nasal pressure to the output of at least one expiratory component of the time series of carbon dioxide; and detect an increase in inspiratory negative pressure associated with an increase in end expiratory carbon dioxide and to output a warning in response to the detection.