Why is using a digital blood-pressure monitor a valid
method for gathering health information?
read the excerpt from "measuring blood pressure" by the
centers for disease control and prevention.
measure your blood pressure regularly. it is quick and
painless, and it is the only way to know whether your
pressure is
blood pressure is measured using two numbers. the first
number, called systolic blood pressure, measures the
pressure in your blood vessels when your heart beats.
the second number, called diastolic blood pressure,
measures the pressure in your blood vessels when your
heart rests between beats.
the technology people identify whether their
blood pressure is too high or too low
the technology enables people to diagnose
complications associated with high blood pressure.
the technology teaches people how to interpret the
numbers in blood pressure measurements
the technology advises people of what to do if they are
at risk of high blood pressure.
if the measurement reads 120 systolic and 80 diastolic,
you would say "120 over 80" or write "120/80 mmhg."
the chart below shows normal, at-risk, and high blood
pressure levels. a blood pressure less than 120/80 mmhg
is normal. a blood pressure of 140/90 mmhg or more is