A Study of Machine-Learning Classifiers for Hypertension Based on Radial Pulse Wave
Table 1
TD features.
No.
Features
Meaning
1
h1
Main wave amplitude. It reflects the compliance of the aorta and the cardiac ejection function of the left ventricular
2
h2
Main isthmus wave amplitude. Same physiological significance as h3.
3
h3
Heavy wave front wave amplitude. It reflects the elasticity of arterial vessels and its peripheral resistance.
4
h4
Dicrotic notch amplitude. It reflects the peripheral resistance of arterial vessels and the closure of aortic valve.
5
h5
Gravity wave amplitude. It reflects the compliance of the aorta and the function of aortic valve.
6
t1
Left ventricular rapid ejection period. The time value from the start point to the crest point of the main wave on the pulse graph.
7
t2
The duration of the beginning of the tidal wave.
8
t3
The duration of the crest of the tidal wave.
9
t4
Left ventricular systolic duration. The time value from the start point to the dicrotic notch on the pulse graph.
10
t5
Left ventricular diastolic duration. The time value from the dicrotic notch to the end point on the pulse graph.
11
t
Includes left ventricular systolic and diastolic duration. The time value from the start point to the end point on the pulse graph.
12
w1
main wave 1/3 height. The duration of maintaining high intravascular pressure.
13
w2
main wave 1/5 height. The duration of maintaining high intravascular pressure.
14
w1/t
The ratio of the width of the main wave at its 1/3 height to the entire pulse cycle. It reflects the proportion of the duration time of continuous high pressure in the aorta in the entire pulse cycle.
15
w2/t
The proportion of the duration time of continuous high pressure in the aorta in the entire pulse cycle.
16
h1/t1
cardiovascular function
17
As
Systolic area. The area on the pulse graph is related to cardiac output.
