The normal range of blood pressure is systolic pressure: 90~139mmHg, diastolic pressure: 60~89mmHg. If the systolic pressure is 140mmHg higher or the diastolic pressure is higher than 90mmHg after repeated blood pressure measurements, it can be diagnosed as hypertension. Hypertension is divided into three grades: systolic blood pressure is 140-159mmHg, diastolic blood pressure is 90-99mmHg, which is a grade one hypertension; The systolic pressure is 160-179 mmHg, and the diastolic pressure is 100-109 mmHg, which is a secondary hypertension; Systolic blood pressure ≥ 180mmHg and diastolic blood pressure ≥ 110mmHg are classified as Grade III hypertension. For mild grade I hypertension, it is not necessary to take antihypertensive drugs, but mainly to improve lifestyle, including strengthening exercise, weight loss, low salt and low-fat diet, avoiding staying up late and emotional excitement, not smoking, not drinking, etc., and regularly monitor blood pressure fluctuations.
