Patent ID: 6500127
Filing Date: 2002-12-31
Classification: A61B

Abstract:
A blood pressure monitor apparatus for monitoring a blood pressure of a living subject, comprising:blood pressure-relating information obtaining means for obtaining, successively in synchronization with a heartbeat of the subject, blood pressure-relating information which decreases with a decrease of the blood pressure of the subject and which comprises at least one of an estimated blood pressure (EBP), a normalized pulse-wave area (SF), and a pulse-wave propagating velocity (VM); decrease determining means for determining a decrease of the blood pressure-relating information obtained by said obtaining means successively in synchronization with the heartbeat of the subject; abnormality judging means for judging that the blood pressure of the subject is abnormal when said decrease of the blood pressure-relating information is greater than a predetermined reference value (&ggr;1); and a reference value determining means for determining said reference value (&ggr;1) based on the blood pressure-relating information successively obtained by said obtaining means, by utilizing a predetermined relationship between said reference value and said blood pressure-relating information, said relationship being predetermined such that a smaller reference value corresponds to blood pressure-relating information corresponding to a lower blood pressure.