PROBLEM TO BE SOLVED: To provide a sphygmomanometer which detects the attitude of a subject lying in blood pressure measurement and corrects a blood pressure value according to the attitude.SOLUTION: A sphygmomanometer comprises: an acceleration sensor 34 integrally worn on an arm 90a as a measured portion of a subject 90； and an attitude detection part which detects the attitude of the subject 90 in blood pressure measurement, on the basis of an output from the acceleration sensor 34. The attitude detection part identifies the attitude of the subject 90 on the basis of the angle θ of a trunk 90b with respect to a floor surface 99 in a directional vision viewed along the height direction of the subject 90 lying on the floor surface 99 and the position of an arm 90a according to the angle θ of the trunk 90b. A blood pressure measurement part measures the blood pressure value of the measured portion of the subject 90. A blood pressure correction part corrects the pressure value of the subject 90 measured by the blood pressure measurement part, in accordance with the attitude identified by the attitude detection part.SELECTED DRAWING: Figure 4【課題】血圧測定時に寝ている被験者の姿勢を検出し、その姿勢に応じて血圧値を補正できる血圧計を提供すること。【解決手段】この発明の血圧計は、被験者９０の被測定部位としての腕９０ａに一体に装着される加速度センサ３４と、加速度センサ３４の出力に基づいて、血圧測定時の被験者９０の姿勢を検出する姿勢検出部とを備える。姿勢検出部は、被験者９０の姿勢を、床面９９上に寝ている被験者９０を身長方向に沿って見た方向視での床面９９に対する体幹９０ｂの角度θと、体幹９０ｂの角度θに応じた腕９０ａの位置とによって特定する。血圧測定部は、被験者９０の被測定部位の血圧値を測定する。血圧補正部は、姿勢検出部によって特定された姿勢に応じて、血圧測定部によって測定された被験者９０の血圧値を補正する。【選択図】図４
