What are the causes of high diastolic blood pressure

summary

The normal diastolic blood pressure can represent our physical and mental health, but some people will appear the phenomenon of high diastolic blood pressure. The normal life activities of this kind of patients are different from those of ordinary people. We should know which factors can cause this change. Let's talk about the causes of high diastolic blood pressure.

What are the causes of high diastolic blood pressure

First: diastolic blood pressure is the lowest value of arterial blood pressure at the end of diastolic period, also known as "low pressure". The normal blood pressure of patients with hypertension is within 140-90. The most important and direct factor of high diastolic blood pressure is high peripheral vascular resistance, which is more dangerous than high pressure in a sense. In addition to the resistance caused by the small lumen of peripheral blood vessels, the relaxation and contraction of vascular smooth muscle can also significantly change the vascular resistance.

Second: in primary hypertension, the resistance of peripheral blood vessels increases due to the decrease of the diameter of resistance vessels, the increase of pressor substances and the increase of responsiveness to them, leading to the increase of diastolic blood pressure. Cerebral ischemia, high salt diet and stress can lead to sympathetic nerve excitation, promote the release of norepinephrine, activate renin angiotensin aldosterone system, cause vasoconstriction, increase peripheral resistance and increase diastolic blood pressure. Blood loss, shock, or secretion of vasoconstricting hormones caused by endocrine neoplastic syndrome.

Third: high diastolic blood pressure indicates poor elasticity of the vascular wall. When people get old, the elasticity of the great arteries decreases. With the same systolic pressure, the ability to relieve is poor, and the high pressure is especially high. When the heart is diastolic, it can not effectively maintain diastolic blood pressure, so the decline of arterial elasticity is a simple systolic hypertension in the elderly, mainly because of the factor of arterial elasticity. The elderly have different degrees of arteriosclerosis and decreased vascular elasticity, so the performance of hypertension is increased systolic blood pressure, diastolic blood pressure is not high but low.

matters needing attention

Through the above introduction, we know that the higher diastolic pressure may cause some changes. This incidence rate is generally higher in the elderly, which may be related to their cardiac function decline. Severe high diastolic blood pressure may also cause shock and other serious behaviors.