Thought I'd throw this out in case anyone has the answer.
One definition of high bp is "In individuals older than 50 years, hypertension is considered to be present when a person's blood pressure is consistently at least 140 mm Hg systolic or 90 mm Hg diastolic."
Or sometimes expressed as:
high blood pressure is, by definition, a repeatedly elevated blood pressure exceeding 140 over 90 mmHg -- a systolic pressure above 140 with
a diastolic pressure above 90.