Systolic pressure is the highest pressure at the height of
the heart’s contraction. Diastolic pressure is the lowest
pressure when the heart is resting.
In general, a lower blood pressure reading is better un-
less it causes unpleasant symptoms such as fainting and/
or lightheadedness.
The following chart shows possible blood pressure uctu-
ations during a 24-hour period.
The following factors will inuence blood pressure mea-
surement results and cause variations:
• Bathing • Conversation
• Drinking alcohol • Exercise
• Moving • Stress
• Meals • Temperature change
• Thoughts • Smoking etc.
Systolic
Diastolic
PM AM
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