PROBLEM TO BE SOLVED: To provide a blood pressure measurement apparatus, a blood pressure derivation program and a method for deriving a blood pressure capable of accurately deriving the blood pressure based on an occurrence mechanism of a cuff pressure and a pulse save amplitude.SOLUTION: A derivation control section 104 includes an envelope extraction part 113 for extracting an envelope of a volume pulse wave based on an arterial volume signal, a differential processing part 114 for differentiating the envelope with respect to the cuff pressure, a maximum value extraction part 115 for extracting the maximum value of the differential value of the envelope, and a blood pressure determination part 116 for determining the cuff pressure used for the differentiation of the maximum value as the blood pressure.COPYRIGHT: (C)2010,JPO&INPIT【課題】カフ圧と脈波振幅の発生機序とに基づいて、正確に血圧を導出することのできる血圧測定装置、血圧導出プログラムおよび血圧導出方法を提供すること。【解決手段】導出制御部104は、動脈容積信号に基づく容積脈波についての包絡線を抽出するための包絡線抽出部113と、包絡線をカフ圧で微分するための微分処理部114と、包絡線の微分値の最大値を抽出するための最大値抽出部115と、最大値の微分に用いられたカフ圧を、血圧として決定する血圧決定部116とを含む。【選択図】図3
