Section 5 - Operation
Manual Sphygmomanometer
Placing the Cuff
When fitting the cuff, place the center of the cuff inflation bag over the
artery (for the brachial artery, place over the inside of the arm above the
elbow). Make sure that the cuff fits securely on the limb and that the
INDEX line falls between the two RANGE lines. If the INDEX line does
not fall between the RANGE lines, select a smaller or larger cuff.
The cuff can be used on either the right or left extremity, but the left is
usually preferred.
NOTE: Do not place the cuff on a limb being used for infusion.
For accurate blood pressure measurements, position the cuff at the same
level as the patient’s heart. Placing the cuff above the heart causes the
reading to be falsely low; placing the cuff below the heart causes the
reading to be falsely high. In instances where you cannot place the cuff
at the same level as the heart, use the following general rule.
• For every inch of elevation above the heart, add 1.8 mmHg to the
reading.
• For every inch of elevation below the heart, subtract 1.8 mmHg from
the reading.
INDEX LINE
CENTER OF INFLATION BAG
POSITIONED PROPERLY OVER
BRACHIAL ARTERY
RANGE
MARKS
CENTER OF INFLATION
BAG MARKS (BOTH SIDES)
OP30005
RANGE
ADULT SIZ E
25 to 35 cm ar m circumf erence
Appl y cuff so cent er of i nflat ion
bag O is ov er bracial art ery. Be sure
INDEX line falls between the two
RANGE lines. If it does not, a lar-
ger or smaller cuff is required. Can
be used on eit her right or left arm.
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5-13-3
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