According to the Guidelines for Prevention and Treatment of Hypertension in China revised in 25, normal blood pressure is below ＜12/8mmHg, normal high blood pressure is 12-139/8-89mmHg, and hypertension is above ≥14/9mmHg.
Blood pressure makes the blood normally transported to the whole body in the artery. If the blood pressure is too low, the blood cannot be supplied to the whole body. On the contrary, if the blood pressure is too high, the blood vessels may be damaged, which also reflects that the blood or heart may be abnormal.
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Extended information:
Blood pressure will be affected by the following factors:
1. Height: The higher the height, the more pressure the heart needs to pump blood, so that blood can flow all over the body.
2. Age: Blood pressure will gradually increase with age, because arterial elasticity becomes worse, and systolic blood pressure changes obviously. Under normal circumstances, blood pressure in childhood is the lowest.
3. Blood viscosity (blood density): The thicker the blood, the more pressure the heart needs to pump it out.
4. posture: the influence of posture on blood pressure comes from gravity, and the systolic blood pressure is the highest when lying flat, followed by sitting posture and standing posture. On the contrary, the diastolic pressure is the highest in standing position, followed by sitting position and the lowest in lying position.
5. Vascular quality: If blood vessels become narrower, it is more difficult for blood to pass through, so the heart needs more pressure to pump out blood.
6. Others: mental state, life rhythm, personal differences, eating habits, drugs, heredity, weather changes, latitude area where you live, etc.
reference source:/baike.baidu.com/item/%E6% AD% A3% E5% B8% E8% A1% 8% E5% 8e% 8B% E5% 8% BC/272797? Fr = Aladdin "target =" _ blank "title =" Baidu Encyclopedia-Normal Blood Pressure Value "> Baidu Encyclopedia-Normal blood pressure value