Patent ID: 8897849

Claim:
A cardiovascular risk evaluation apparatus comprising: a body unit comprising: an air system; a light emitting element drive circuit; a processor; and a memory; a cuff connected to the air system of the body unit by an air tube; a hypoxic acquisition unit within the processor of the body unit that acquires a measurement result that includes a blood oxygen saturation level and a blood pressure, which are measured in a hypoxic period in which the blood oxygen saturation level of a subject is lower than a threshold value; a non-hypoxic acquisition unit within the processor of the body unit that acquires a measurement result that includes a blood oxygen saturation level and a blood pressure, which are measured in a non-hypoxic period of the blood oxygen saturation level of the subject; an indicator detection unit within the processor of the body unit that calculates a cardiovascular risk evaluation indicator for the subject based on a relationship between blood oxygen saturation level and blood pressure that is based on the measurement result acquired by the hypoxic acquisition unit and the measurement result acquired by the non-hypoxic acquisition unit, wherein the indicator detection unit calculates the cardiovascular risk evaluation indicator for the subject based on a relational expression that indicates a difference between the measurement result acquired by the hypoxic acquisition unit and the measurement result acquired by the non-hypoxic acquisition unit; and a display information generation unit within the processor of the body unit that outputs the cardiovascular risk evaluation indicator to an output unit that is connected to the processor of the body unit, wherein the processor judges whether or not the subject is sleeping, and wherein the hypoxic acquisition unit acquires a measurement result that includes a blood oxygen saturation level that is measured in a hypoxic period in a case of a judgment that the subject is sleeping, and a blood pressure that was measured when the blood oxygen saturation level was measured.