High diastolic blood pressure

Consistently high diastolic blood pressure has its own characteristics. It can be in both young and elderly people, and often speaks of a symptomatic hypertension, i.e. that the pressure increases on the background of some other (ground) of the disease.

Thereby forming the diastolic pressure

If the systolic blood pressure is generated by the force and frequency of contraction of the heart muscle, the diastolic blood pressure is formed due to the resilience of small peripheral arteries. Changes in these arteries lead to an increase in diastolic blood pressure. For example, the walls of blood vessels to change or they are affected by a substance that improve muscle tone of these vessels. It is therefore considered that the diastolic pressure is usually higher in symptomatic hypertension, which is the cause of some other disease.

Increase in the diastolic blood pressure in the heart muscle disease

Pure diastolic or "headless" hypertension is always happening with increasing peripheral arterial blood flow resistance because of the fall left ventricular function, associated with diseases of the myocardium. Such a state of the heart muscle can cause myocardial infarction, myocarditis, myocardiosclerosis, that is any disease that can weaken the heart muscle. Lack of infarction may be linked to his overexertion or in violation of the venous return of blood to the heart.

Therefore, in such diseases may be an increase in diastolic blood pressure without increasing systolic blood pressure (because cardiac output is not increased). This condition may be accompanied by general weakness, malaise, dizziness, headaches.

People with diastolic blood pressure above 105 mm Hg risk of hemorrhagic strokes in the brain ten times, and myocardial infarction - five times higher than those with normal diastolic blood pressure.

Stable gradual decrease in diastolic blood pressure leads to a significant reduction in the number of complications such as myocardial infarction and stroke.

Increase in the diastolic blood pressure in other diseases

Almost always persistent increase in diastolic blood pressure accompanied by kidney disease. The kidneys produce renin-active substance that increases muscle tone of peripheral arteries, thus contributing to the rise in diastolic blood pressure. With a decrease in renal blood flow begins to intensively allocated the renin into the blood - this is the response of the body to reduce blood flow to the kidneys. Renin reacts neutral angiotenzinogenom blood, thereby forming the active substance angiotensin II, which has a significant ability to raise blood pressure.

Increased renin release cause renal diseases such as chronic glomerulonephritis - infectious-allergic disease of the kidneys, which leads to kidney tissue replacement by connective tissue. The growth of the connective tissue causes renal scarring and compression of blood vessels - it is a signal to the increased production of renin.

The vessels of the kidneys may be affected and chronic inflammation in the kidney - chronic pyelonephritis. This proliferation of connective tissue occurs in the interstitial tissue of the kidneys. This process is not developing as fast as in glomerulonephritis and is not as malignant.

The cause of hypertension of renal origin may also be anomalies of the kidney or acquired narrowing of the main renal arteries and their major branches. In adults, a frequent cause narrowing of the renal arteries is atherosclerosis Atherosclerosis - when problems with blood vessels Which is often complicated by thrombosis.

Sometimes a narrowing of the renal arteries causes them to isolated lesions of unknown origin with the growth in the arterial wall connective tissue and muscle fibers (fiber-muskulyarnaya hyperplasia), wherein portions ulcerations are adjacent to atrophy (decrease in the volume of tissue). The disease is most often found in younger women, especially after pregnancy.

To normalize the high diastolic blood pressure suitable drugs that work on the principle of blocking the synthesis of the enzyme responsible for the production of renin. This angiotensin converting enzyme inhibitors (ACE inhibitors) and drugs that block the formation of angiotensin II. Patients who have diastolic high blood pressure, should receive them constantly.

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