Which practice helps ensure cuff placement yields accurate readings?

• A. Place the cuff over clothing
• B. Ensure cuff bladder covers the arm as recommended
• C. Inflate to a fixed 140 mmHg always
• D. Readings are unaffected by cuff size

Answer: (B)

The key to accurate blood pressure readings is proper cuff placement with the bladder fully covering the arm where it can compress the brachial artery. When the cuff bladder properly encircles the arm and sits on bare skin with the center aligned over the artery, it applies pressure evenly and measures the true arterial pressure as the cuff is inflated and then released.

This setup matters because if the cuff is too small or placed incorrectly, readings become distorted—smaller cuffs tend to produce higher numbers, while larger cuffs can yield lower numbers. Reading over clothing or inflating to a fixed number regardless of the person also introduces errors, since cuff size, arm girth, and the artery’s location vary between individuals.

So, ensuring the cuff bladder covers the arm as recommended, centered over the brachial artery and placed on bare skin at heart level, is the best practice for accurate readings.