Abnormal dyspnea perception detection system and method
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United States of America Patent
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Dec 10, 1996
Grant Date -
N/A
app pub date -
Oct 3, 1994
filing date -
Oct 3, 1994
priority date (Note) -
Expired
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Abstract
Apparatus and methods to test respiratory patients for altered dyspnea awareness. The device imposes a defined inspiratory resistive load under controlled breathing conditions and records the patient's subjective sensation of dyspnea over time by incrementally increasing the inspiratory resistive load. In a preferred embodiment, the patient breathes in a controlled manner with visual biofeedback prompting, having predetermined respiratory rate, inspiration to expiration time ratio and inspiration and expiration respiratory waveforms.
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