BE RX800, Инструкция по эксплуатации

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2.5 Common Sources of Error
Any efforts by the patient to support the arm can increase the blood pressure.
Make sure you are in a comfortable, relaxed position and do not activate any of
the muscles in the measurement arm during the measurement. Use a cushion
for support if necessary and rest your arm completely.
ATTENTION!
Comparable blood pressure measurements always require the same
conditions with a peaceful and calm environment. Ensure that you
take measurements under the same conditions to obtain an accurate
estimate of blood pressure variation patterns.
• The cuff should be at heart level.
• If the arm artery lies considerably lower or higher than the heart, an
erroneous value of blood pressure is measured. Each 15 cm difference in
height results in a measurement error of 10 mmHg.
• A loose cuff causes false measurement values.
• With repeated measurements, blood accumulates in the arm, which can
lead to false results. Consecutive blood pressure measurements should be
repeated after at least a 15 second pause or after the arm has been held
up in order to allow the accumulated blood to flow away.
2.6 Fitting the Cuff
a) Put the end of the cuff (with fastener) through
the metal ring, making the cuff a cylinder.
(Ignore this step if your cuff is already set up.)
Proper assembly allows the Velcro
®
to match up
properly.
b) Place the cuff around your arm. Make sure the
bottom edge of the cuff is about 1” above the
elbow joint. Adjust the cuff so that the rubber
tubing under the cuff lies over the brachial
artery, which runs on the inside of the arm (see
Fig. B).
a)
b)