Diabetic patients with chronic kidney disease: Non-invasive assessment of cardiovascular risk

Table 1 Arterial stiffness parameters and their definitions[98,99]

Arterial stiffness parameter	Definition
cfPWV (m/s)	Pulse wave distance between two measuring sites (carotid and femoral artery) divided by pulse transit time (measured by electrocardiographic monitoring)
PP (mmHg)	Difference between systolic and diastolic pressure
AP (mmHg)	Difference between systolic and inflection pressure
AIx (%)	AP divided by PP
AIx@75 (%)	AIx adjusted for heart rate at 75 beats per minute
ED (ms)	Duration of left ventricular systolic ejection
EDI (%)	The ratio of the duration of systolic ejection to the total duration of the heart cycle
SEVR (%)	The diastolic area under the curve divided by the systolic area under the curve, derived from the pulse wave curve

cfPWV: Carotid-femoral pulse wave velocity; PP: Pulse pressure; AP: Augmentation pressure; AIx: Augmentation index; AIx@75: AIx adjusted for heart rate 75/min; ED: Ejection duration; EDI: Ejection duration index; SEVR: Subendocardial viability ratio.