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The high blood pressure is gradual at early stages and may take at least 10–15 years to fully develop. Besides diabetes, other factors that may also increase high blood pressure include obesity, insulin resistance and high cholesterol levels. In general, fewer than 25 percent of diabetics have good control of their blood pressure.
If the systolic blood pressure is elevated (>140) with a normal (<90) diastolic blood pressure (DBP), it is called isolated systolic hypertension. [2] Eighty percent of people with systolic hypertension are over the age of 65 years old. [3] Isolated systolic hypertension is a specific type of widened (or high) pulse pressure.
In people aged under 50 years, more men than women have hypertension, [10] and in ages above 50 years the prevalence of hypertension is the same in men and women. [10] In ages above 65 years, more women than men have hypertension. [7] Hypertension becomes more common with age. [5] Hypertension is common in high, medium, and low-income countries.
Stage 2 hypertension is between 160 and 179 mmHg on the systolic side, and between 100 and 109 on the diastolic side. And finally, stage 3 hypertension is anything over 180 mmHg on the systolic side and 110 mmHg on the diastolic side. Typically both systolic and diastolic pressures tend to climb or fall together, but that’s not always the case.
The health care provider usually takes 2–3 readings at several medical appointments to diagnose high blood pressure. [40] Using the results of the blood pressure test, the health care provider will diagnose prehypertension or high blood pressure if: For an adult, systolic or diastolic readings are consistently higher than 120/80 mmHg.
Both high systolic pressure and high pulse pressure (the numerical difference between systolic and diastolic pressures) are risk factors. [49] Elevated pulse pressure has been found to be a stronger independent predictor of cardiovascular events, especially in older populations, than has systolic, diastolic, or mean arterial pressure.
High diastolic blood pressure measured while standing in a person who stood up shortly after waking up. When it affects an individual's ability to remain upright, orthostatic hypertension is considered as a form of orthostatic intolerance. The body's inability to regulate blood pressure can be a type of dysautonomia.
Pulse pressure is calculated as the difference between the systolic blood pressure and the diastolic blood pressure. [3] [4]The systemic pulse pressure is approximately proportional to stroke volume, or the amount of blood ejected from the left ventricle during systole (pump action) and inversely proportional to the compliance (similar to elasticity) of the aorta.