Secondary Hypertension
Some people diagnosed with high blood pressure have a
definite reason for having it. This is called secondary hypertension. It is the
result of renal disease (having to do with the kidney), pulmonary disease
(having to do with the lungs), endocrine disease (having to do with hormones)
or vascular disease (having to do with blood vessels).
RENAL DISEASES
Renal diseases can interfere with blood flow to the kidneys.
The poor blood flow causes the kidneys to release an enzyme called rennin. When
rennin mixes with the plasma in your blood it forms a vasopresser called
angiotensin.
Just to explain a
little better, a vasopressor is a fancy word for a substance or something that
causes your blood vessels to constrict. Cold, stress and even nicotine can
cause your blood vessels to constrict. Angiotensin causes your blood vessels to
constrict.
Now that your blood vessels are constricted, your heart has
to push (pump) harder to get the blood through your system. This causes your
blood pressure to go up. The harder your heart has to push (pump), the higher
your blood pressure gets.
ARTERIOSCLEROSIS
Arteriosclerosis causes the walls of your blood vessels to
be less elastic. This decreases their ability to expand and recoil. Since the
vessel isn’t able to expand as much, more pressure is needed to force the blood
through the vessel. Your heart has to push harder to get the blood through your
system, therefore, your blood pressure goes up.
ATHEROSCLEROSIS
Atherosclerosis narrows the opening of blood vessels because
of the plaque buildup along the walls of the vessels. The plaque buildup causes
resistance to the blood flow, so more pressure is needed from the heart to get
the blood through your system, therefore, your blood pressure goes up.
HYPERNATREMIA
Hypernatremia (increased salt in the blood) causes
vasocongestion (congestion in vessels). This congestion causes the heart to
pump with more force, which increases pressure in the arteries, which causes
high blood pressure.
STRESS
We all have a sympathetic nervous system. It supplies nerves
that increase our heart rare, constricts blood vessels and raises our blood
pressure. When we get stressed, our sympathetic nervous system kicks in to
“high gear” which causes our blood pressure to go up. If a person stays
stressed all the time, their blood pressure stays high all the time.
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High Blood Pressure?
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Secondary Hypertension
