Patent ID: 8834387
Filing Date: 2014-09-16
Classification: A61B

Abstract:
1. A method for detecting resisted breathing of a patient, comprising the steps of: obtaining an airflow signal corresponding to the breathing of the patient by sensing airflow of the patient with a sensor connected to a processor; the processor carrying out an algorithm that instantiates a state machine; the state machine operating on the airflow signal to change the state of the state machine, the state machine being defined at least by a maximum value of the airflow signal and a minimum value of the airflow signal; determining a section of the airflow signal corresponding to inspiration within the airflow signal, the section corresponding to inspiration having a front portion and a middle portion; determining a peak value of the front portion as the maximum value of the airflow signal after the state machine has operated on the section of the airflow signal corresponding to inspiration; comparing the peak value of the front portion with a value representing the airflow of the middle portion; and determining the presence of resisted breathing based on the comparison between the peak value of the front portion with the value representing the airflow of the middle portion.