December 20, 2013
What Current Blood Pressure Numbers Reveal About High Blood Pressure
"“The only reason for time is so that everything doesn't happen at once." = Albert Einstein"
By: Victor E. Battles, M.D.
The two blood pressure numbers obtained when a BP reading is taken conveys significant information about
hypertension (i.e. high blood pressure) in relationship to the past, present and future, and behooves understanding
from a perspective of using that information for establishing health literacy and achieving patient engagement in
the area of hypertension management.
The most important instantaneous information that blood pressure numbers reveal about a person with establish
hypertension is, whether or not the blood pressure is well controlled. If the BP is 140/90 or greater but
there is no record of previous elevated readings of that magnitude or greater, a diagnosis of hypertension cannot
be made unless that initial reading is extremely high, or additional information other than BP readings, is
available to support a conclusion the person has pre-existing hypertension which has just not been officially
Additional information that justifies the conclusion that currently recorded elevated blood pressure numbers are
indicative of pre-existing hypertension is that which reveals evidence of complications of long-standing BP
elevation. Those complications are damage to the blood vessels of the retinae, thickening of the heart
muscle, and abnormalities of kidney function, in the absence of other diseases to explain the abnormalities.
Damage to the blood vessels of the retinae can be visualized by a primary care doctor with an instrument known as
an ophthalmoscope during a physical examination. Thickening of the heart muscle oftentimes shows up on an
EKG. Abnormalities of kidney function can oftentimes be detected by performing BUN and creatinine
measurements on a sample of blood. Therefore, a dilemma of deciding whether someone has hypertension based on
a sole initial elevation of the blood pressure numbers of 140/90 or greater can oftentimes be solved with the joint
usage of a current BP reading and the additional supporting information.
The future information that contemporary blood pressure numbers convey about hypertension is based on the
progressive rise in BP and the increased frequency of hypertension with aging. The age-related rise in blood
pressure is continuous throughout varying age brackets but plateaus in the 80th and 90th decades. The
increase in the incidence of hypertension with aging occurs in all ethnic groups with some variation within
different groups and a somewhat greater rise among man compared to women. The third HHANES survey reported an
age-adjusted prevalence of hypertension of 3.3%, 13.2%, 22%, 37.5%, and 51% in Caucasian man in the 18-29-year-old,
30-39-year-old, 40-49-year-old, 50-59-year-old, and 60-74-year-old age groups respectively. Another medical study
concluded that the incidence of hypertension increased by 5% for every 10 years of aging. Given these facts,
knowledge of one’s blood pressure numbers and age at the time of a current BP measurement are fairly good
indicators of whether not hypertension will develop in the future, considering life
Victor E. Battles, M.D. is a board-certified internist with 30 + years of patient
contact. Dr. Battles has been a principal investigator in several clinical hypertension research
trials, and is the founder of Proactive Health Outlet.