Pasesa AVE-2000 Pro - Terminology and Definitions; Blood Pressure and Pulse Rate Explained; Arterial Velocity Pulse Index (AVI) Details

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Blood Pressure

The blood pressure is the pressure of the flowing blood against the vascular wall, and it also serves as

the force to propel the blood flowing in the vessels.

• High Blood Pressure (SYS, Systolic Blood Pressure)

Systolic blood pressure refers to the maximum blood pressure appearing in an artery during systole

when the heart contracts to drive blood into the arterial system.

• Low Blood Pressure (DIA, Diastolic Blood Pressure)

Diastolic blood pressure is the minimum blood pressure appearing in an artery during diastole when

blood pressure in the artery keeps decreasing after the closure of the aortic valve.

Pulse Rate

• Pulse Rate

The frequency of arterial pulse wave detected by the cuff, which is generally comparable to heart

rate except under some special situations, such as in subjects with arrhythmia or severe occlusive

disease in artery or cardiac valve.

AVI & API

AVI & API are the new vascular index jointly researched and developed by RIKEN, AIST, and Shisei

Datum in Japan.

AVI & API are subject to the effect of age, gender, cholesterol level, blood pressure as the well as the

history of diabetes, smoking and exercise, etc.

AVI may be reduced through regular exercise.

• AVI (Arterial Velocity Pulse Index)

AVI is a new vascular index that developed jointly by Shisei Datum in Japan and RIKEN.

Himeno Ryutaro with his sub generation integration simulation team, and Gao muzhou with his

dominant organ Scale study team, are the research and development teams of RIKEN. Gao muzhou

is also a professor of Tokyo University.

Principle: AVI shows the characteriscs of the pulse waveform when the cu pressure is higher than

maximum blood pressure, and meanwhile converts them into numerical values as the indices of the

central arterial sness. The higher the value is, the higher risk of arterial sness it represents.

The upper waveforms of below graph are those of cu pressure pulse wave, and the lower ones

are the dierenated waveforms (dierenated pulse wave). The shape of the cu oscillaon

wave varies with the increase and early arrival of reected pressure waves accompanying aging

or arterial sening, presenng an enhanced pressure augmentaon in late systole followed by a

steeper pressure decrease. AVI is an index used to quantavely assess such wave changes, which is

calculated based on the rao of the valley value (Vr) to the peak value (Vf) of the me-dierenated

cu wave (AVI=(Vr/Vf)×20).