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Hypertension generally refers to systolic blood pressure, hypotension refers to diastolic blood pressure, systolic blood pressure 90mmHg higher than diastolic blood pressure may be related to simple systolic hypertension, aortic insufficiency, anemia and other factors.

1. Simple systolic hypertension

Simple systolic hypertension patients systolic blood pressure greater than 140mmHg, while diastolic blood pressure normal, pulse pressure difference is relatively developed, systolic blood pressure can appear 90mmHg higher than diastolic blood pressure phenomenon.

2. Aortic valve insufficiency

Aortic valve insufficiency may be related to infectious endocarditis, trauma and other factors. When aortic valve insufficiency occurs, blood regurgitation in aorta during diastolic period to left ventricle, pulse pressure difference may gradually increase, and systolic pressure is 90mmHg higher than diastolic pressure.

3. Anemia

Anemia may be related to factors such as insufficient erythropoiesis and excessive destruction of erythrocytes. In severe cases, the body accelerates blood circulation in order to ensure oxygen supply, which promotes obvious increase of systolic blood pressure and symptoms of systolic blood pressure higher than diastolic blood pressure by 90mmHg.