Where should you place the blood pressure cuff and the stethoscope when taking a BP?

• A. Cuff on the wrist; stethoscope over the carotid artery.
• B. Cuff on the bare upper arm at heart level; stethoscope over the brachial artery; the arm supported.
• C. Cuff over clothing; stethoscope on chest.
• D. Cuff on the thigh; stethoscope over the femoral artery.

Answer: (B)

When taking blood pressure, use a method that allows you to hear the heart’s arterial sounds clearly while the cuff compresses and then releases pressure. The cuff belongs on the bare upper arm and should sit at heart level, so the pressure you measure reflects the same hydrostatic conditions as the heart. The stethoscope goes over the brachial artery in the antecubital area so you can auscultate the Korotkoff sounds as the cuff deflates. The arm should be supported and relaxed to prevent muscle activity from altering the reading.

Placing the cuff on the wrist or thigh, or over clothing, or placing the stethoscope over the chest or carotid artery, would lead to inaccurate readings or muffled or misheard sounds. Keeping to the upper-arm, heart-level, bare-skin cuff with the stethoscope over the brachial artery is the standard, reliable setup.