Your midline lumen must be flushed to prevent infection and keep blood from clotting. Flush twice a day with heparin if not in use.

Do Midlines have blood return?

A midline will often fail to present a blood return after several days of dwell time. This alone may not be a reason to remove and replace the line if it is otherwise flushing adequately without patient discomfort and there are no signs of complications such as phlebitis or infiltration.

Can Midlines infiltrate?

Care, use, and maintenance complications

However, extended SPC and midline catheter use and patient-related risk factors can increase the challenge of preventing complications such as catheter occlusion, infection, infiltration or extravasation, skin injury, and phlebitis.