What causes high systolic blood pressure, and low diastolic pressure?

Dependens: As we age, the systolic blood pressure rises and the diastolic blood pressure decreases some. This is different for different populations of course. If there is a very wide difference between the two however, i would be concerned about aortic valve insufficiency among other things. High systolic blood pressure should be treated with a low salt diet, exercise and, if necessary, medications.

Multiple!: Aortic-insufficiency or a-v fistula or pda!