Patent ID: 8251913

Claim:
A blood-pressure measuring apparatus comprising: a blood-pressure measuring unit which measures a blood pressure value of a subject; a level determination unit which determines at constant time intervals a level of sleep of the subject from at least three levels except for awakening; a storage unit in which information specifying a condition for the determined level of sleep is stored; a judgment unit which judges whether or not the determined level of sleep satisfies the condition specified by the information stored in the storage unit, wherein the judgment unit judges that the condition is satisfied when the level of sleep determined by the level determination unit differs by more than a specific amount from a level of sleep previously determined by the level determination unit; a blood-pressure measuring start unit which causes the blood-pressure measuring unit to start blood pressure measurement when the judgment unit judges that the determined level of sleep satisfies the condition; and a blood pressure value storage unit in which the blood pressure value of the subject measured by the blood-pressure measuring unit is stored in response to an instruction from the blood-pressure measuring start unit.