Mid-arm approach to basilic and cephalic vein cannulation using ultrasound guidance.

Central venous lines are often used when there is difficulty obtaining peripheral venous access. The basilic and cephalic veins in the mid-arm region, although difficult to see or palpate, can be imaged longitudinally and cannulated using real-time ultrasonography, providing an easy alternative. These techniques are described, with reports of four typical cases.