5
About Blood Pressure
A. AHA blood pressure classifications:
Standards for assessment of high or low blood pressure without regard
to age, have been established by the American Heart Association (AHA
2017), as shown in the chart.
However this chart is not exact for classification of blood pressure and
it's intended to be used as a guide in understanding non-invasive
blood pressure measurements. Please consult with your physician for
proper diagnosis.
B. Variations in blood pressure:
Individual blood pressures vary greatly both on a daily and a seasonal
basis. These variations are even more pronounced in hyper tense
patients. Normally the blood pressure rises while at work and is at its
lowest during sleeping period.
(hyper tense: means a person who has high blood pressure
symptom.)
The graph below
illustrated the variations
in blood pressure over a
whole day with
measurement taken
every five minutes.
The thick line represents
sleep. The rise in blood
pressure at 4 PM (A in the
graph) and 12 PM (B in
the graph) correspond to
an attack of pain.
(Direct arterial pressure recording in unrestricted man.
Beven, Honour & Stott: Clin. Sci. 36:329. 1969)
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