Angioscan Electronics AngioScan-01, User Manual, Page: 44 / 119

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© 2014 AngioScan-Electronics LLC
AngioScan Medical Tests
Normal values of the age of the index based on age:
Age (years old) Female Male
20 - 30 -0.95+0.31 -0.91+0.23
30 - 40 -0.64+0.26 -0.86+0.28
40 - 50 -0.36+0.23 -0.57+0.28
50 - 60 -0.16+0.27 -0.20+0.30
60 - 70 0.03+0.26 -0.01+0.27
older than 70 0.18+0.29 0.00+0.32
4.1.4.11 ED - Ejection Duration
The duration of the systole or ejection duration (ED) depends on the heart rate. When the heart rate (HR)
increases, the duration of the cardiac cycle decreases as well as does the duration of the systole. The
faster is the pulse the shorter is the systole. For example, when the heart rate is 60 beats per minute,
an average duration of systole is 308 ms. The shortest and the longest durations of the systole at this
pulse rate are 288 and 328 ms, respectively.
At 100 beats per minute, the average systole duration is 244 ms and it ranges from 224 to 264 ms.
In the above example, the duration of the systole in a healthy subject is 250 ms.
The absolute value of the duration of systole is related to the anthropometric parameters of the patient