Central Systolic Blood Pressure (SBPao)
The central systolic blood pressure (SBPao) is a crucial hemodynamic parameter representing the pressure in the aorta. This measurement results from the ejected stroke volume and the dampening function of large arteries, along with propagative and reflected pressure waves. Physiologically, it tends to be lower than peripheral systolic blood pressure due to variations in wall structures.
In comparison with conventional cuff brachial blood pressure, SBPao is a better cardiovascular prognostic marker. It can be a good determinant or even preventive factor of the disease prognosis. For example, in individual’s adult with normal central blood pressure in the spurious hypertension phenomenon, which is seen in isolated systolic hypertension, the risk of organ damage can be predicted to be pretty low.
What is Central Systolic Blood Pressure?
Clinical studies have indicated that central systolic blood pressure (SBPao) has predictive value independent of the corresponding peripheral (brachial) blood pressure. Both, SBPao and pulse pressure are stronger predictors of cardiovascular risk and hypertensive organ damage than brachial blood pressure.
It would be really important to use the proper methodological way and device (non invasively), for assessing and interpreting of the accurate SBPao from precisely calculated peripheral pressure pulses. Non-invasively determined central pulse pressure is more strongly related to vascular hypertrophy, extent of atherosclerosis, and cardiovascular events than is brachial blood pressure. SBPao is more relevant than peripheral pressures for the pathogenesis of cardiovascular disease.
Furthermore, it holds prognostic significance, and its estimation can be easily done using the simple Arteriograph measurement.
As a general reference, optimal brachial blood pressure falls within the range of 90/60mmHg to 120/80mmHg. Blood pressure is categorized as high if it reaches 140/90mmHg or above, and low if it falls below 90/60mmHg. However, it is advisable for central systolic blood pressure (SBPao) to be maintained below 140 mmHg and to be lower than brachial blood pressure.