Fukuda VaSera VS-2000 Series, Руководство по эксплуатации

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13-6
Chapter 13 Appendix
[7] %MAP (Percent Mean Arterial Pressure)
[8] AI (Augmentation Index)
AI expresses the ratio of the percussion wave generated by a pressure increase of the aorta to the tidal wave at the systole in
brachial pulse waves. It is obtained through the following formula:
AI may also be expressed as a ratio of the pressure difference
∆
P (= P2 - P1) to the pulse pressure. With the VS-2000,
however, a ratio of P1 to P2 is calculated.
[9] BPB (Blood Pressure Balance)
This graph shows the direction of blood pressure reduction in the limbs.
As shown in the following formula, %MAP is a quotient obtained by dividing the mean pulse
pressure by the pulse pressure - assuming the cuff-induced pulse waves as blood pressure
waveform - and expressed as a percentage.
The mean pulse pressure is a quotient obtained by dividing the area of the pressure pulse
wave by the time.
The %MAP is an index that expresses pulse wave acuteness. The presence of arterial stenosis
or occlusion increases %MAP.
RB-%MAP: %MAP of right brachial pulse waveLB-%MAP: %MAP of left brachial pulse wave
RA-%MAP: %MAP of right ankle pulse waveLA-%MAP: %MAP of left ankle pulse wave
P1: Pressure at the peak of percussion wave
P2: Pressure at the peak of tidal wave
AI is an index indicating vascular extensibility. It has a positive correlation
with the resistance of the aortic vessel and increases with age and
arteriosclerosis.
R-AI: Measurement obtained from the right brachial pulse wave
L-AI: Measurement obtained from the left brachial pulse wave
The values are printed in the following priority order: R-AI, L-AI.
□
This shows the blood pressure of each limb with the distance from the starting point.
The BP of each limb is shown at an angle of 45°; the right brachium at upper left, the
left brachium at upper right, the right ankle at lower left and the left ankle at lower
right.
If the BP value for the right (left) brachium is not available, the BP value for the left
(right) brachium will appear instead.
Similarly, if the BP value for the right (left) ankle is not available, the BP value for
the left (right) ankle will appear instead.
＋
The gravity point of the systolic BP of the limbs
Angle: The clockwise angle starting from 0, which is between the third and fourth quadrant.
Distance: The BP distance from the starting point to the gravity point.
↑
The length of the arrow indicates the degree of ischemia at the applicable site.
Arrow indication: An arrow appears when lower limb ABI is below 1.00 and the systolic BP difference of left and
right upper limbs is 20mmHg or above.
%MAP 㸻 ™ 100
Mean Pulse Pressure (M)
Pulse Pressure (P)
AI
㸻
P2
P1