Arterial Blood Pressure Waveform Analysis and Its Applications in the Assessment of Vasovagal Syncope

The arterial blood pressure (ABP) is a measure of the pressure (force per unit area) of blood against the walls of arteries. It is commonly expressed as two numerical values: the maximum pressure measured during contraction of ventricles, that is, systole (systolic blood pressure [SBP]), and the minimum pressure measured during relaxation of ventricles, that is, diastole (diastolic blood pressure [DBP]). Pulse pressure (PP) is the difference between SBP and DBP.