5.2. Common sources of error:
Note:
Comparable blood pressure measurements always require the same conditions!
These are normally quiet conditions.
• Efforts by the patient to support the arm can increase blood pressure. Make sure you are in a com-
fortable, relaxed position and do not activate any of the muscles in the measurement arm during
the measurement. Use a cushion for support and rest your arm on a table.
• If the upper arm artery lies considerably lower or higher than the heart, a false high or low blood
pressure will be measured!
*A variation of 6” between the cuff and heart level can result in a reading error of + or -
10mmHg.
• Cuffs that do not fit properly result in false measurement values. Selecting the correct cuff is ex-
tremely important. The cuff size is dependent upon the circumference or distance around your up-
per arm measured in the center. The permissible range is printed on the cuff. If this is not suitable
for your use, please contact CVS.
Note:
Only use clinically approved
Microlife or CVS Cuff Model # 271237.
• A loose cuff or a sideways protruding air-pocket causes false measurement values.
• Measurements should be done after a 5 minute rest to ensure accuracy.
• Consecutive blood pressure measurements should be performed after a 1 minute pause.
5.3. Fitting the cuff
a) Pass the end of the cuff through the flat metal ring so
that a loop is formed. The Velcro closer must be facing
outwards. (Ignore this step if the cuff has already been
prepared.)
b) Place the cuff over the left upper arm so that the tube
is closer to your lower arm. Align the cuff artery mark
(arrow) over the arm artery than runs down the inner
side of the arm.
c) Lay the cuff on the arm as illustrated. Make certain
that the lower edge of the cuff lies approximately 3/4”
to 1” (2 to 3 cm) above the elbow and that the tube is
closer to the inner side of the arm.
d) Tighten the cuff by pulling the end and close the cuff
by affixing the velcro. Make sure that the cuff Index
end falls between the OK lines when the cuff is in po-
7
tube
Summary of Contents for #271243
Page 16: ......
