The bladder width of the cuff must be 40
percent of the circumference of the limb. It is
also advisable to keep the air volume to a
minimum by using the smallest cuff size
possible for each patient. The point of
maximum oscillations is coincident with mean
arterial pressure regardless of arterial elasticity
so long as the ratio of air volume in the cuff to
the volume of the artery under compression
does not greatly exceed ten (10) to one (1).
For a correct NIBP cuff fit:
Single use devices, as indicated on the device packaging, should be disposed of after use and
must never be reused. Follow your hospital's guidelines for appropriate disposal. Reuse of
single-use devices can result in spread of patient infection, degradation of monitoring
performance, or inaccurate measurements.
12‐4 Monitoring NIBP Expression MR400 Instructions for Use
Adult and pediatric patients—the index
line on the size chosen should fall within
the range line when placed on the
Neonatal patients—the size chosen
should be within the stated
circumference range for the limb of the
All patients—align the cuff to ensure the
artery mark is placed over the artery.
All patients—the middle of the cuff
should be placed at the level of the right
atrium of the heart.