Systems and methods using induced perturbation to determine physiological parameters
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United States of America Patent
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Aug 13, 2013
Grant Date -
Jan 21, 2010
app pub date -
Oct 9, 2008
filing date -
Jul 15, 2008
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Abstract
According to embodiments, systems and methods for non-invasive blood pressure monitoring are disclosed. An exciter may induce perturbations in a subject, and a sensor or probe may be used to obtain a detected signal from the subject. The detected signal may then be used to measure one or more physiological parameters of the patient. For example if the perturbations are based on a known signal, any differences between the known signal and the input signal may be attributable to the patient's physiological parameters. A phase drift between the perturbation signal and the detected signal may be determined from a comparison of the scalograms of the exciter location and the sensor or probe location. From the scalogram comparison, more accurate and reliable physiological parameters may be determined.
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