How blood pressure affects the brain?
When arteries become stiff and narrow, blood flow is insufficient and causes the onset of stroke (stroke or ischemic stroke). Elevated blood pressure can also cause rupture of an artery and cause a brain hemorrhage (stroke or hemorrhagic stroke).

How blood pressure affects the kidneys?
Hypertension causes stiffness in the arteries that supply blood to the kidneys. But also damages the kidney itself, which can lead to kidney failure requiring dialysis even. Furthermore, if the kidney is damaged it can cause increased blood pressure.

How blood pressure affects other organs?
* If it affects the arteries of the legs causes pain when walking.
* If you damage the arteries of the retina causes alterations in vision.
* In men may cause impotence.

What are normal levels of blood pressure?
* Normal blood pressure. The maximum levels of systolic blood pressure (maximum) are between 120-129 mmHg, and diastolic (minimum) between 80 and 84 mmHg. Also lower numbers are considered normal, provided they do not cause any symptoms.
* High-normal blood pressure. The figures for systolic blood pressure (maximum) are between 130-139 mmHg, and diastolic (minimum) between 80-89 mmHg. In people with diabetes, affecting the heart (ventricular hypertrophy) or kidney damage, the levels above 130/80 mmHg are considered too high.

Is there blood pressure compensated?
You can talk about high blood pressure, normal or low, but never compensated or decompensated. On a practical level, these three possibilities are negative:
* Have high peak pressure (systolic) or the minimum (diastolic).
* Have at least as high as the maximum.
* Have a high and one low is also bad.

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