Arterial Stiffness and Dialysis Calcium Concentration

Figure 3

Central systolic pressure time index (SPTI) and diastolic pressure time index (DPTI). Pulse wave profile analysis of ascending aorta shows that systolic pressure time index (SPTI) represents myocardial workload and the diastolic pressure time index (DPTI) represents the myocardial perfusion. The ratio of DPTI/SPTI is also referred to as the subendocardial viability ratio. Arterial stiffness and earlier wave reflection lead to a lower DPTI/SPTI ratio that may be detrimental to the myocardial function. The pulse wave profile shows also the ejection duration (ED), diastolic duration (DD), and end systolic pressure (ESP).