High blood pressure risk?

If the patient has grade 1 hypertension, systolic blood pressure is 140-159mmHg, diastolic blood pressure is 90-99mmHg, usually low-salt and low-fat diet, active physical exercise, and strict use of nifedipine, hydrochlorothiazide, irbesartan and other antihypertensive drugs according to the doctor's advice, the disease can generally be controlled, not dangerous, do not worry too much.

If the patient has grade 3 hypertension, systolic blood pressure ≥180mmHg, diastolic blood pressure ≥110mmHg, usually dangerous, easy to cause target organ damage, acute myocardial infarction, retinopathy and other complications.