What is a midline catheter?

A midline catheter is a long, flexible catheter that is inserted into a vein in the upper arm and advanced towards the center of the body, typically stopping near the junction of the cava. It is longer than a peripheral IV catheter, but shorter than a central venous catheter.

Midline catheters are generally used for patients who require intravenous therapy for a longer period of time than can be safely administered through a peripheral IV, usually up to two weeks. They are used to administer medications, fluids, and blood products, as well as to draw blood samples.

Unlike central venous catheters, midline catheters do not enter the central circulation, making them less risky for complications such as bloodstream infections or pneumothorax. However, they do carry a higher risk of phlebitis and thrombosis compared to peripheral IV catheters.

Midline catheters are typically placed by trained healthcare professionals, such as nurses or physicians. They require proper care and maintenance to prevent infections and other complications.