Question: where are midline catheters inserted?
Answer: A midline catheter is 3 inches (7.5 cm) to 8 inches (20 cm) in length, and it's inserted via the veins near the antecubital fossa into the basilic, cephalic, or brachial veins (see Site selection for midline catheters). The tip is advanced no farther than the distal axillary vein in the upper arm.