Concentration measurement device and concentration measurement method
First Claim
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1. An apparatus for measuring temporal relative change amounts of oxygenated hemoglobin concentration and deoxygenated hemoglobin concentration, that vary due to repetition of chest compression, in a head, comprising:
- a light source configured to output measurement light;
a light detector configured to detect the measurement light that has propagated through the interior of the head and generate a detection signal in accordance with the intensity of the detected measurement light; and
a processor that is electrically coupled to the light detector and programmed to;
determine, based on the detection signal, a temporal relative change amount of the oxygenated hemoglobin concentration and a temporal relative change amount of the deoxygenated hemoglobin concentration that vary due to repetition of chest compression,determine a phase shift between the temporal relative change amount of the oxygenated hemoglobin concentration and the temporal relative change amount of the deoxygenated hemoglobin concentration, andevaluate the chest compression based on the phase shift.
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Abstract
A concentration measurement apparatus includes a probe, having a light incidence section making measurement light incident on the head and a light detection section detecting the measurement light that has propagated through the interior of the head, and a CPU determining temporal relative change amounts of oxygenated hemoglobin concentration and deoxygenated hemoglobin concentration and determining a correlation coefficient of the relative change amounts and a polarity of a slope of a regression line.
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Citations
10 Claims
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1. An apparatus for measuring temporal relative change amounts of oxygenated hemoglobin concentration and deoxygenated hemoglobin concentration, that vary due to repetition of chest compression, in a head, comprising:
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a light source configured to output measurement light; a light detector configured to detect the measurement light that has propagated through the interior of the head and generate a detection signal in accordance with the intensity of the detected measurement light; and a processor that is electrically coupled to the light detector and programmed to; determine, based on the detection signal, a temporal relative change amount of the oxygenated hemoglobin concentration and a temporal relative change amount of the deoxygenated hemoglobin concentration that vary due to repetition of chest compression, determine a phase shift between the temporal relative change amount of the oxygenated hemoglobin concentration and the temporal relative change amount of the deoxygenated hemoglobin concentration, and evaluate the chest compression based on the phase shift. - View Dependent Claims (2, 3, 4, 5)
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6. A method for measuring temporal relative change amounts of oxygenated hemoglobin concentration and deoxygenated hemoglobin concentration, that vary due to repetition of chest compression, in a head, comprising:
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irradiating the head with measurement light; detecting the measurement light that has propagated through the interior of the head and generating a detection signal in accordance with the intensity of the detected measurement light; determining, based on the detection signal, a temporal relative change amount of the oxygenated hemoglobin concentration and a temporal relative change amount of the deoxygenated hemoglobin concentration that vary due to repetition of chest compression; determining a phase shift between the temporal relative change amount of the oxygenated hemoglobin concentration and the temporal relative change amount of the deoxygenated hemoglobin concentration; and evaluating the chest compression based on the phase shift. - View Dependent Claims (7, 8, 9, 10)
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Specification