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These categories were defined by the American Heart Association.
This chart applies to adults age 20 and older.
8.3 What is morning hypertension (morning surge)?
Morning high blood pressure or morning surge is defined as the
weekly average for morning blood pressure reading measured
within 1 hour to 2 hours after awakening in the morning and
exceeding 135/85mm Hg. Studies have shown that exaggerated
morning blood pressure surge is a risk for cardiovascular events
which includes ischemic and hemorrhagic stroke. Cardiovascular
events have been shown to be exaggerated in the morning to
coincide with morning high blood pressure. In fact heart attack,
stroke and heart failure have been shown to fall particularly on
a Monday amongst all the other days of the week.
Organ damage and diabetic complications have also been shown
to be linked with morning blood pressure surges just in the same
way as small artery disease and multiple celebral infarcts in elder
members of society. Morning high blood pressure has shown some
correlation with initial stage and progression of atherosclerosis.
Patients with well controlled blood pressure may still have high
morning blood pressure and this happens in 50% of the cases.
Patients with morning hypertension have a 78% more chance of
stroke compared with 48% of other hypertensive patients without
morning high blood pressure. Morning hypertension has also
been associated with changes in heart size and rhythm. This may
lead to heart attack or heart failure.
Morning Hypertension can only detect within 1 hour to 2 hours
after awakening, recommended user monitor their own blood
pressure at home.
