Hypertension symptoms


Information about symptoms of hypertension, prevention and treatment of hypertension.
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Blood pressure


Arterial pressure - pressure in large arteries
Blood pressure is a force from which blood circulating in an organism presses on walls of blood vessels, it is one of key parameters of ability to live. Pressure of blood decreases as it passes through arteries, capillaries and veins. The term "blood pressure" mostly concerns to arterial pressure, namely, to pressure in large arteries.

Measurement of parameters of arterial pressure is spent by means of the device, invented by the Italian doctor Riva-Rochchi. It is a so-called nonivasive method of definition of a blood pressure. The pressure of blood defined by such device, is expressed in millimeters of a mercury column. And though in modern from reasons of safety mercury is not used, units of measure of a blood pressure by tradition remain millimeters of a mercury column (mm hg)
Arterial pressure is measured in two parameters. It (so-called top) and pressure. Sometimes them name intimate and почечное, accordingly. All the matter is that pressure is a parameter of an overall performance of heart, that is with what force heart "swings" blood. It is necessary to note, that increase of frequency of impacts of heart not always causes increases pressure. It depends on the reasons which have caused increase of palpitation.
pressure is a parameter of a tone of blood vessels. That is, this pressure of blood upon a wall of vessels during диастолы, that is during the moment when heart "was unclenched". it refers to for the reason, that is adjusted by normal function of kidneys. For example, at почечной insufficiency, that is, a condition at which there is a delay of a liquid in an organism, диастолическое pressure raises, as the volume of blood in a vascular channel is increased, and therefore, pressure of blood upon a wall of vessels is raised.
Arterial pressure is equal norm 120/80 mm hg However, at some people it can be below, reaching 90/60 mm hg
At children these parameters can be below, at old and elderly - above, in communication with (condensation) vessels.
Regulation of a blood pressure
Arterial pressure is adjusted by hormones and some other factors:
·            Renin it is developed by kidneys. Its allocation by kidneys depends on their normal blood supply. In blood renin turns to angiotensin. This hormone raises a tone of vessels. At an ischemia of kidneys, for example, at diseases, allocation renin raises, that conducts to increase of arterial pressure.
·            Reflexes with барорецепторов. Барорецепторы (the receptors sensitive to pressure of blood) in various bodies, depending on pressure influence frequency and force of reductions of heart, that leads to change of pressure.
·           It is a hormone of adrenal glands. It is responsible for a delay in an organism of a liquid and therefore, also adjusts a blood pressure.
·            Hormones of a thyroid gland. These hormones adjust the general metabolism in and therefore, a blood pressure.
Increase of a blood pressure
Increase of a blood pressure - a Hypertension symptoms
 - happens two types: symptomatic and primary. « The symptomatic hypertensia » means that pressure is raised in view of some reasons: diseases of heart (the got defects, аритмии), kidneys, желез, etc. About primary hypertension symptoms speak internal secretion, when the reason of increase of pressure of blood to find it is not possible. It is so-called hypertonic illness.
What conditions and diseases conduct to increase of arterial pressure?
·            Diseases of heart: at insufficiency the valve of heart, some congenital heart diseases, аритмиях hearts.
·            Diseases of kidneys: practically all diseases of kidneys are accompanied by increase of pressure of blood - a pyelonephritis, diseases and others. The mechanism of increase of pressure here is connected with increase in allocation in view of an ischemia of a kidney, and also with infringement of regulation by kidneys of water balance in an organism (in fact kidneys deduce surplus of a liquid).
·            Diseases of adrenal glands: the raised function of adrenal glands (syndrome Кушинга), (a tumour of adrenal glands at which the raised allocation of adrenaline is marked).
·            Diseases of a thyroid gland: hyperfunction of a thyroid gland - a craw. Thus except for increase of arterial pressure, in view of the raised metabolism increase of frequency of reductions of heart, потливость, irritability and other attributes is marked.
At what conditions arterial pressure goes down?
·            Diseases of heart: a stenosis (narrowing) Hypertension symptoms  the valve and some congenital heart diseases.
·            Diseases of adrenal glands: insufficiency of adrenal glands.
·            Diseases of a thyroid gland: the lowered function of a thyroid gland -
·            Arterial pressure decreases also at many infectious diseases. It is connected by that at mass destruction of cells of microbes, in blood products of their ability to live get. It leads to decrease in arterial pressure because the tone of blood vessels goes down.
·            Allergic diseases: for example, a shock. Thus in blood so-called biologically active substances () which as lower a tone of vessels get.

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