What are the indicators of top and bottom pressure
The top (systolic) blood pressure refers to the force which exerts the myocardium to eject blood into the cavity of the arteries. It is measured in millimeters of mercury and recorded as the first digit. If the myocardium is reduced, the force of ejection of blood inside the arteries is reduced, a decrease in upper pressure. If it increases, increases and systolic pressure.
Diastolic pressure means the force which applies the muscular system of the vessels to resist pressure within them. This value is an indicator of vascular tone, it is written by the second digit. The increased bottom pressure depends mainly from the activity of the kidneys, but rather from the development of renin - an enzyme which is responsible for muscle tone of blood vessels. If the kidneys decrease the production of renin, lower pressure decreases.
Blood pressure in different arteries may be different. For example, it increases the expansion vessel and the closer the artery to the heart. It is easiest to measure at the brachial artery. The physician should measure the pressure on both hands, the distinction between indicators should not be more than 5 mm of mercury.St. If a fixed difference for systolic blood pressure is more than twenty units, and more than a dozen for diastolic, it is possible to conclude that the narrowing of the artery in the limb.
The highest pressure present in the aorta, but they are difficult to measure.
The difference between the upper and lower pressure
Blood pressure "one hundred and twenty-eighty" is considered normal. The difference between systolic and diastolic pressure should not exceed thirty to fifty indicators. An isolated increase in systolic blood pressure suggests that the myocardium is reduced too hard. This can cause the expansion of the heart muscle, and too rapid wear. Increased diastolic pressure indicates insufficient elasticity of the arteries, which can be a sign of atherosclerosis.
The increase in the difference between indicators of pressure can be a precursor to expansion of the myocardium, myocardial infarction, stroke.
Too big difference between systolic and diastolic pressure causes a decrease in cerebral perfusion pressure (the force with which blood is pushed through the blood vessels of the brain). This condition can trigger the development of hypoxia. A significant difference between the upper and lower pressure can be the result of violations of the emotional background. In this case, the counts return to normal after taking sedatives.