I. What are the criteria for hypertension?
Hypertension is an abnormal phenomenon in which the pressure in the arterial blood vessels exceeds the normal value, the definition of hypertension is artificial, (China has modified the diagnostic criteria for hypertension five times) China’s current latest diagnostic criteria for hypertension was developed in 1999, and the WHO/ISH (World Health Organization/International Hypertension League) diagnostic criteria are consistent, that is, in the absence of anti-hypertensive drugs, systolic blood pressure (upper pressure ) ≥ 140 mmHg, and/or diastolic BP (lower BP) ≥ 90 mmHg without antihypertensive medication.
(1) BP=140/90mmHg, also diagnosed as hypertension;
(2) Systolic BP ≥ 140 mmHg, diastolic BP < 90 mmHg or systolic BP < 140 mmHg, diastolic BP ≥ 90 mmHg, are diagnosed as hypertension;
(3) All adults over 18 years of age, the diagnostic criteria are the same, not that, the older they are, the more their diagnostic criteria change, even if they are 70 or 80 years old, if the blood pressure ≥ 140/90mmHg, also diagnosed as hypertension;
(4) Hypertension is divided into primary hypertension and secondary hypertension. Primary hypertension refers to hypertension of unknown cause, accounting for more than 90%, which is still difficult to eradicate but can be controlled. The usual term hypertension refers to primary hypertension.
Secondary hypertension refers to a clear cause of elevated blood pressure, accounting for 5-10% of this hypertension may be due to kidney disease, endocrine disease and other causes, today we are talking about the content refers to primary hypertension.
Second, what is the classification of hypertension?
Systolic blood pressure mmHg
Systolic blood pressure mmHg
Normal blood pressure
<120
<80
Normal high value
120～139
80～89
Grade 1 hypertension
140～159
90～99
Grade 2 hypertension
160～179
100～109
Grade 3 hypertension
≥180
≥110