Which vein is noted as preferred for venipuncture in obese patients?

• A. Cephalic
• B. Median
• C. Basilic
• D. None

Answer: (A)

When veins are harder to find in obese patients, opting for a vein that is more superficial and easier to locate improves success. The cephalic vein runs along the lateral forearm toward the elbow and often remains closer to the surface, making it easier to feel and puncture even when fat tissue conceals deeper veins. This accessibility is why it’s noted as the preferred site in obesity. In contrast, the basilic vein lies on the inner arm and is deeper and more variable, with higher risk of hitting nearby nerves and arteries; the median cubital vein at the elbow, while typically preferred in lean patients, can be buried under fat in obesity, making it harder to locate and cannulate. So the cephalic vein is favored in this scenario.