A blood pressure monitor apparatus for monitoring a blood pressure of a living
subject, wherein the blood pressure is judged to be abnormal when a first change
value as a change of each of a plurality of blood pressure values iteratively obtained
from the subject, from a standard blood pressure obtained from the subject, does
not fall in a first reference range (TH1), wherein the improvement comprises:
the first reference range being determined based on the standard blood pressure
of the subject, according to a relationship between first reference range and standard
blood pressure wherein a plurality of different first reference ranges correspond
to a plurality of different standard blood pressures, respectively.
