The main factor affecting diastolic blood pressure is peripheral vascular resistance. When the peripheral vascular resistance increases, the diastolic pressure increases. On the contrary, when the peripheral vascular resistance decreases, the diastolic pressure decreases. There are many factors affecting the peripheral vascular resistance of patients, among which the more common are smoking, drinking, overwork, mental stress, staying up late and so on.
Normal diastolic blood pressure is between 60 and 89. Diastolic blood pressure above 90 can be diagnosed with hypertension. Hypertension (HTN) is a common cardiovascular risk factor leading to heart failure (HF), coronary artery disease (CAD), stroke, peripheral artery disease and chronic renal failure.
You should monitor your blood pressure regularly. Also, you can improve your lifestyle to lower your blood pressure by eating a low-salt diet, stopping smoking and restricting alcohol, and exercising moderately. If blood pressure remains high, you should use some antihypertensive drugs which should be administered under the direction of a cardiologist, such as Angiotensin-converting enzyme inhibitor, Angiotensin receptor blocker, β-Blocker, Dihydropyridine calcium channel blocker, Thiazide diuretic.