BIOLOGICAL INFORMATION MEASUREMENT DEVICE, MIXED VENOUS OXYGEN SATURATION ESTIMATION METHOD, AND PROGRAM
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United States of America Patent
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Issued Date -
Sep 7, 2017
app pub date -
Feb 16, 2017
filing date -
Mar 4, 2016
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Abstract
Provided is a biological information measurement device, including: a blood index calculation unit which calculates at least part of a blood index associated with oxygen transport based on transmitted light or reflected light when a body part of a test subject is irradiated with light with a plurality of wavelengths; an oxygen consumption calculation unit which calculates an oxygen consumption based on a gas concentration in inspired air, a gas concentration in expired air, and a ventilation amount of the test subject; a cardiac output calculation unit which calculates a cardiac output based on a biological signal obtained by a noninvasive method from the test subject; and an SvO2 estimation unit which estimates the mixed venous oxygen saturation of the test subject by substituting the blood index, the oxygen consumption, and the cardiac output in a calculation formula.
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