4 Monitoring NBP
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Preparing to Measure NBP
1 Attach the cradle to the NBP cuff.
2 Plug the air tubing into the cradle. Hold the flat part of the connector vertically when plugging it
into the inlet, then twist it clockwise to lock into place. Avoid compression or restriction of
pressure tubes. Air must pass unrestricted through the tubing.
Make sure that you are using a Philips-approved correct sized cuff and that the bladder inside the
cover is not folded or twisted.
A wrong cuff size, and a folded or twisted bladder, can cause inaccurate measurements. The width
of the cuff should be in the range from 37% to 47% of the limb circumference.
3 Apply the cuff to the upper arm at the same level as the heart. If it is not at heart level, you must
use the measurement correction formula to correct the measurement.
Apply the cuff so that the cradle is located at the outside of the arm. The bladder of the cuff is
then automatically over the artery. Make sure that the D-ring is not over the artery as this can lead
to missing or inaccurate readings. Do not wrap the cuff too tightly around the limb. It may cause
discoloration, and ischemia of the extremities.
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