Is high pressure important? Or is low pressure important? Which is more dangerous, high pressure or low pressure? doctor instructions
Systolic blood pressure is what we call high pressure; diastolic blood pressure is what we call low pressure!
There is no absolute saying that high pressure is important or low pressure is important, both are equally important, but they have their own characteristics.
Especially for people with high blood pressure, whether the high pressure is higher than the normal value, or the low pressure is higher than the normal value, it is called high blood pressure; when the systolic blood pressure or the diastolic blood pressure is favorable to the normal value, it is necessary to suspect hypotension.
- What are blood pressure, high pressure, and low pressure?
Blood pressure: Simply put, blood pressure means that there is normal blood flow in the blood vessels. Since blood is a liquid, it is under pressure just like water. The pressure generated by the blood on the blood vessels is blood pressure.
High pressure: also called systolic pressure, it is the lateral pressure generated by the blood injected from the ventricle to the blood vessel wall when the heart contracts, and the blood pressure is the highest at this time; the pressure on the inner wall at this time is called systolic pressure, also known as high pressure.
Low pressure: also known as diastolic blood pressure, it is the end of diastole, when blood temporarily stops being injected into the artery, and the blood that has flowed into the artery continues to flow due to the elasticity and tension of the blood vessel wall, and there is still pressure on the blood vessel wall. The blood pressure at this time is called for diastolic pressure.
Second, what is the normal blood pressure?
At present, the adult blood pressure standard in China is that the high pressure is 90-140mmHg, and the low pressure is 60-90mmHg; but this range does not mean normal blood pressure, because the standard of normal blood pressure in China is lower than 120/80 and 120-139/80. -89mmHg belongs to the high value of normal blood pressure.
hypertension:
Hypertension is considered when blood pressure is higher than 140/90.
120-139/80-89 belong to the high value of normal blood pressure;
Previous hypertension guidelines classified hypertension into 3 grades:
140-159/90-99, belonging to grade 1 hypertension;
160-179/100-109 belong to grade 2 hypertension;
Greater than 180/110, it belongs to grade 3 hypertension.
The latest high blood pressure guidelines divide high blood pressure into 2 grades:
140-159/90-99 for grade 1 hypertension
≥160/100 is grade 2 hypertension
Low blood pressure:
Hypotension should be considered when blood pressure is lower than 90/60; of course, this is only a general standard, and it is specific to each person and has to be different from person to person. For example, some people have relatively low blood pressure since childhood, often hovering around 85-90. As long as there is no discomfort, it cannot be regarded as low blood pressure.
With the increase of age, the low pressure of many elderly people will decrease, often lower than 60, but as long as the high pressure is normal, it is not considered low blood pressure.
- What are the characteristics of high pressure rise and low pressure rise?
We began to say that no matter whether high pressure rises or low pressure rises, it is harmful; the general characteristic is that young people are mostly dominated by low pressure rises, and high pressures are sometimes normal, which is also considered high blood pressure. With the increase of age, most of the elderly have high high pressure, normal low pressure, or even low low pressure, which is also considered high blood pressure.
- high blood pressure
Low-pressure high or low-pressure high is predominant, more common in young and middle-aged people, working and living under great pressure, long-term tightness, obesity, sedentary inactivity, smoking, etc. will activate the activity of the renin-angiotensin-aldosterone system, leading to heart rate Accelerates, blood vessels constrict, and low pressure rises.
Therefore, young and middle-aged people should emphasize a healthy lifestyle when lowering blood pressure. By adhering to exercise, quitting smoking and drinking, controlling weight, reducing staying up late, and reducing stress, it is very helpful to control blood pressure.
The study showed that for every 10 mmHg increase in low pressure, the risk of cerebral infarction increased by 11% and the risk of cerebral hemorrhage increased by 23%.
Every 5 mmHg reduction in low pressure can reduce the risk of cerebral infarction and cerebral hemorrhage by 40%; it can reduce the risk of coronary heart disease, angina pectoris and myocardial infarction by 14%.
- high blood pressure
In the elderly, the pumping function of the heart is good, but the hardening of the arteries is more serious. Similarly, in the periphery, atherosclerosis of small arteries is also aggravating, and the recoil force of blood vessels that lose elasticity during diastole is also weakened, resulting in lower and lower low pressure.
For the elderly, because atherosclerosis is a cause of high blood pressure, there are relatively many comorbid diseases, so while lowering blood pressure, cardiovascular diseases must be taken into account. However, for the elderly, if there is no special disease, but the high pressure is simply elevated, the low pressure is normal, or is lower than the low level, the main reference is high pressure.
The study showed that for every 20 mmHg increase in high blood pressure, the risk of cerebral infarction increased by 31% and the risk of cerebral hemorrhage increased by 24%.
Every 10mmHg reduction in high blood pressure can reduce the risk of cerebral infarction and cerebral hemorrhage by 30%; it can reduce the risk of coronary heart disease, angina pectoris and myocardial infarction by 23%.
In short, whether it is high pressure or low pressure, it is very important, and neither can exceed the normal standard; whether it is high pressure or low pressure exceeding the normal standard, we must find a way to control the blood pressure to the normal level!