Method and apparatus for monitoring a blood oxygen saturation level relative to a saturation threshold value
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United States of America Patent
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Mar 13, 2018
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app pub date -
Feb 4, 2013
filing date -
Feb 3, 2012
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Abstract
A method and apparatus for monitoring a blood oxygen saturation level within a subject's tissue is provided. The method includes the steps of: a) sensing the subject's tissue using a near infrared spectrophotometric oximeter, and producing a value representative of the oxygen saturation level within the sensed tissue; b) comparing the determined saturation value to a predetermined threshold oxygen saturation value; and c) determining at least one of a time under threshold (TUT) value or an area under threshold (AUT) value using the determined saturation value and the threshold value.
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