GENERAL INFORMATION

High tension or Hypertension (HTA) is a term that refers to the fact of which the blood travels round the arteries to a pressure major than the desirable one for the health.

In some cases, there can be sickness, bled by the nose, or headaches, but not necessary.

Most of the affected ones have no symptoms. That does not mean that it is not dangerous: Big part of the deaths that produce every year the son to themselves as a result direct of the hypertension or of his complications on the cardiovascular system or the kidney.

NORMAL TENSION

A normal typical TA is 120/80 mm Hg. This means that the heart exercises a 120 mm maximum pressure Hg during the systole or phase of pumping, and that the heart in rest, in diastolic phase or of filling, has a 80 mm pressure Hg. (The pressure of the heart is the same that that of all the arteries of the organism).

The TA is determined by two principal factors between many others: The blood quantity that circulates, and the caliber of the arteries along which it circulates.

In general, all the more volume of circulating blood and the minor is the diameter along which this volume circulates, the major it is the TA.

The kidneys control the volume of circulating water and the quantity of salt that contains the body. These two facts have direct effects in the TA. All the more salt in the body, more water is retained in the circulation, and more it can increase the TA, which in turn can increase the tendency of the arteries to become narrower.

(Nevertheless, a person with a healthy kidney and without HTA he can tolerate a very wide margin of ingestion of salt without effects on the TA).

On the other hand, if the glasses become smaller, the heart has to work more to pump the same blood quantity, and there increases the pressure to which the blood is pumped.

Other factors that influence the TA are the nervous system, the proper blood glasses (in particular, the smallest arteries, called arteriolas) and a series of hormones.

CAUSES OF HTA

The HTA is the increase of the TA to 140/90 mm Hg or more.

This can happen without a well-known previous cause (essential HTA) or like result of some another illness (secondary HTA).

The most frequent causes of secondary HTA are:

• Illnesses endocrines (of the glands): Syndrome of Cushing, Tumors of the adrenal glands.
• Illnesses of the kidney: Estenosis (tightness) of the Renal Artery, glomerulonefritis, or renal mistake.

The pregnancy and the use of contraceptive oral also can produce HTA in some women.

TO SEE ALSO

• Complications of the HTA
• Since the Tension takes
• Treatment of the Arterial Hypertension
• Medicines for the HTA TV/radio commercials
• Medicines for the Generic HTA
• Medicines for the HTA. Generalities
• Handling of the Arterial Hypertension

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