Research, experience and epidemiological data substantiates the widely held belief by medical science that high blood pressure subtypes defined by isolated or combined elevations of both systolic and diastolic blood pressure demonstrate distinct patho-physiological mechanisms, have different outcomes and may demand a different treatment approach.
It is understood that when the aorta (the large trunk artery that carries blood from the left ventricle of the heart to branch arteries) and large elastic arteries increase in stiffness independent of a raise in ateriolar resistance it leads to isolated systolic hypertension. In contrast, when ateriolar resistance predominantly increases combined systo-diastolic hypertension (SDH) can be predicted if stiffness also increases. If arterial stiffness is normal or low even when ateriolar resistance increases, this becomes a case of high diastolic blood pressure. For this cause doctors may use isolated diastolic hypertension as a marker of a good elasticity of aorta and large arteries.
As noted in the article (follow next link) specifically dealing with high systolic blood pressure, systolic hypertension tends to increase in the older population particularly of those 60 years and above. This is because the aorta and large arteries tends to increase in stiffness with age.
As much as isolated hypertension is a clear warning and determinant of cardiovascular risk, high diastolic blood pressure does not particularly seem to be associated with increased cardiovascular risk outside of other specific factors to be dealt with under diastolic hypertension causes below.
Research based on the history of hypertension subtypes shows that those with isolated diastolic hypertension are 23.1 times more likely to develop systolic-diastolic hypertension than those with optimal blood pressure (<120/80mm Hg). Patients with high diastolic blood pressure do not seem to be at increased risk of developing high systolic blood pressure in the short to medium term. However, they ought to be carefully monitored overtime.
Home blood pressure monitoring is thus very important in today's approaches to hypertension management. It is of great importance even for households to invest in blood pressure equipment which accurately does the job. Particular brands such as the Omron blood pressure monitors series [pictured] are amongst those recommended for this purpose.
High diastolic blood pressure treatment and symptoms
Isolated diastolic hypertension is benign in nature at least from face value. It has a generally good response to hypertension medications or anti-hypertensive drugs. These drugs for treating hypertension usually are prescribed and administered following widely used hypertension guidelines. Results of a survey by the Third National Health and Nutrition Examination Survey (NHANES) showed that hypertension treatment normalized diastolic blood pressure to <90mm Hg in 89.7% of patients and only to <140mm Hg of systolic pressure in 49.0% of patients.
Else where and in other studies greater control has been observed to be gained more easily of diastolic blood pressure than systolic blood pressure. Uncontrolled systolic blood pressure leaves a lot of its patients at increased risk of cardiovascular disease than those with uncontrolled diastolic blood pressure. As far as hypertension specialists are concerned, effective control of systolic blood pressure is were the real challenge lies and therefore automatically the center of focus when it comes to treatment. Hypertension treatment may also involve employing a special hypertension diet or foods that lower blood pressure in general.
The relatively easy response of isolated diastolic hypertension to anti-hypertensive treatment must be accompanied by adequate control of other risk factors through appropriate health promoting lifestyle modifications. Lifestyle changes would include,for instance but not limited to, conscious and consistent approaches to food and beverage consumption necessitated, for example, by the negative link between caffeine and blood pressure and the positive association between say celery and high blood pressure
High diastolic blood pressure causes
In general the causes of hypertension are not known as it relates to essential hypertension. On the whole low blood pressure causes are better known than causes of hypertension. Isolated systolic hypertension has had a notion held that it is a low risk condition. Some studies such as the Framingham report hold the view that this must be revisited. Some patients observed to have isolated hypertension and an increased risk of isolated systolic hypertension tended to be more frequently men, of considerable weight and smokers than others considered in the same group. This points to the fact that IDH when accompanied with other risk factors become of a greater risk.