ABNORMAL DYSPNEA PERCEPTION DETECTION SYSTEM

摘要

Apparatus and methods to test respiratory patients for altered dyspneaawareness. The device imposes a defined inspiratory resistive load (3, 24)under controlled breathing conditions and records the patient's subjectivesensation of dyspnea (10, 14) over time by incrementally increasing (18, 29)the inspiratory resistive load. In a preferred embodiment, the patientbreathes in a controlled manner with visual biofeedback prompting (19, 11, 14,6), having predetermined respiratory rate, inspiration to expiration timeratio and inspiration and expiration respiratory waveforms.