pwdb_pw_indices.csv

This spreadsheet contains pulse wave indices extracted from the simulated pulse waves.

Most of the column headers consist of three parts. e.g. AorticRoot_SBP_V states:

• the measurement site (AorticRoot), as defined here)
• the variable type (SBP, defined below)
• whether this is a value (V) or a time (T, in secs). If no V or T suffix is provided, then it is a value.

The variable types are:

Column Header	Details
Age	Age, in years
SBP	systolic blood pressure, in mmHg
DBP	diastolic blood pressure, in mmHg
MBP	mean blood pressure, in mmHg
PP	pulse pressure, in mmHg
Qmax	maximum flow rate, in m3/s
Qmin	minimum flow rate, in m3/s
Qmean	mean flow rate, in m3/s
Qtotal	total flow during one cardiac cycle, in m3
Umax	maximum flow velocity, in m3/s
Umin	minimum flow velocity, in m3/s
Umean	mean flow velocity, in m3/s
Amax	maximum luminal area, in m3
Amin	minimum luminal area, in m3
Amean	mean luminal area, in m3
P1in	p1, measured at the inflection point, in mmHg
P1pk	p1, measured at the peak, in mmHg
P2in	p2, measured at the inflection point, in mmHg
P2pk	p2, measured at the peak, in mmHg
Psys	systolic pressure peak, in mmHg
Pms	first derivative of pressure at time of maximum slope (i.e. max dP/dt), in mmHg/s
AI	Augmentation index, calculated from P1in and P2pk
AP	Augmentation pressure, calculated from P1in and P2pk
PTT	Time between the onset of the pressure wave at the aortic root, and the onset of the current pressure wave, in secs
PPGa	'a' point on the second derivative of the PPG. The PPG is measured in arbitrary units, au, scaled to occupy a range of 0 to 1. Therefore, this value is measured in au / s2.
PPGb	'b' point on the second derivative of the PPG, in au /s2.
PPGc	'c' point on the second derivative of the PPG, in au /s2.
PPGd	'd' point on the second derivative of the PPG, in au /s2.
PPGe	'e' point on the second derivative of the PPG, in au /s2.
PPGsys	systolic peak on the PPG, in au
PPGdia	diastolic peak on the PPG, in au
PPGdic	dicrotic notch on the PPG, in au
PPGms	first derivative of the PPG at time of maximum slope (i.e. max dPPG/dt), in au/s
RI	Reflection index, calculated from the PPG wave
SI	Reflection index, calculated from the PPG wave (assuming a height of 1.75 m)
AGI_mod	Modified ageing index, calculated from the PPG wave

Note that PPG-derived values are only provided at peripheral sites.