舒张压高（Diastolic pressure）.docVIP

舒张压高（Diastolic pressure） Diastolic pressure is the minimum value of arterial pressure at the end of diastole when the chamber is relaxed and the aortic pressure drops, also known as low pressure.. The normal blood pressure in hypertensive patients is within 140-90. The most important and direct factor of the diastolic pressure is the high resistance of the peripheral vessels. In a sense, it is more dangerous than the high pressure. In addition to the small resistance of the peripheral vascular lumen, the relaxation of the vascular smooth muscle can also significantly alter vascular resistance. In primary hypertension, the resistance is increased by increasing the caliber of resistance vessels, increasing the volume of pressor substances, and increasing the resistance to peripheral blood vessels, leading to increased diastolic blood pressure. Cerebral ischemia, high salt diet and stress can lead to sympathetic nerve activity, promote the release of norepinephrine, and activation of the renin angiotensin aldosterone system, vasoconstriction, increased peripheral resistance, resulting in increased diastolic blood pressure. Loss of blood, shock, or secretion of some hormones promoting the contraction of the blood vessels caused by the endocrine tumor syndrome. Diastolic pressure is high, indicating that the wall of the vessel is poor in elasticity. When the person is old, the elasticity of the large artery drops, and the same systolic pressure can relieve the tension, and the pressure is especially high. When diastolic heart does not maintain diastolic blood pressure effectively, the elasticity of the large artery decreases in elderly patients, which is characterized by simple systolic hypertension, mainly because of the elasticity of the great arteries. Medication A beta blocker is preferred, such as propranolol, atenolol, Mei TORO M, betaxolol, pindolol etc.; Two, angiotensin converting enzyme inhibitors (ACEI), such as Kato Pury, Benner Pury, Bea Knapp Leigh, fosinop