Angioscan Electronics AngioScan-01, User Manual, Page: 38 / 119

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© 2014 AngioScan-Electronics LLC
AngioScan Medical Tests
Type A pulse wave is characterized by the global maximum of the pulse wave coinciding with the
maximum of the reflected wave. This type of pulse wave is observed in the elderly and in patients with
hypertension and other diseases of the cardiovascular system.
4.1.4.5 VA - Vascular Age
Vascular age (VA) is a calculated parameter based on age index. In order to determine the age of the
vascular system, a study was conducted to correlate the biological age with the vascular parameters of
healthy subjects. This indicator is integral and provides a general assessment of the health of the
cardiovascular system. In addition, it is useful in communicating with patients, since it allows one to
easily explain the state of the patient’s cardiovascular system.
The vascular age index is used widely (Takazawa). A similar algorithm for computing a vascular age
index is used in the device Pulse Trace by the American company Micro Medical.
4.1.4.6 Stress Index
This parameter is known as the cardiovascular system stress index or as the Baevsky index. It is
applicable for the assessment of the heart rate variability. The parameter characterizes the state of the
regulatory system, which controls the cardiovascular system. Stress index depends on the general
health and fitness of the patient, and on the state of the baroreceptor system. The index is also useful
during orthostatic tests with changes in body position.
The examples below show two procedures of conducting the test.