What is essential to minimize cuff-size related error?

• A. Ensure proper cuff size
• B. Use any cuff regardless of size
• C. Inflate beyond necessary always
• D. Attach two cuffs for stability

Answer: (A)

Choosing the right cuff size is essential for accurate blood pressure measurement. The cuff’s bladder width should be about 40% of the arm's circumference and the length should cover roughly 80% of it. When the cuff is too small, more pressure is needed to compress the artery, which tends to produce falsely high readings. When the cuff is too large, the artery is occluded at a lower pressure, leading to falsely low readings. Matching the cuff to the limb ensures the pressure applied accurately reflects the true arterial pressure without systematic over- or underestimation. That’s why ensuring proper cuff size is the best approach for minimizing cuff-size related error. Using any cuff regardless of size, inflating beyond what’s necessary, or attaching two cuffs does not address the sizing issue and can introduce additional errors.