Where is the Brachial Artery located and used for BP measurement?

• A. Inner fold of the arm near the elbow
• B. Inner thigh
• C. Neck
• D. Wrist

Answer: (A)

Measuring blood pressure uses a large artery that can be easily compressed and heard through a stethoscope. The brachial artery sits in the upper arm and lies just inside the elbow, in the inner fold, known as the antecubital area. This location is ideal because the cuff around the upper arm can press evenly on the artery, and you can place the stethoscope over the artery at that bend to listen as the pressure is released. The sounds you hear (Korotkoff sounds) let you identify systolic and diastolic pressures accurately.

Other sites aren’t standard for routine BP measurements. The inner thigh involves the femoral artery and isn’t practical for regular BP checks. The neck involves the carotid artery, which is risky to compress and not used for routine readings. The wrist uses the radial artery and can be used in some cases, but it’s more sensitive to position and may give less accurate results, so upper-arm measurement is the preferred method.