where is a picc line supposed to be
Peripherally inserted central catheter A PICC is inserted in a peripheral vein in the arm, such as the cephalic vein, basilic vein or brachial vein, and then advanced proximally toward the heart through increasingly larger veins, until the tip rests in the distal superior vena cava or cavoatrial junction.
Lateral mark Each mark indicates the edge of the safe water channel in terms of port (left-hand) or starboard (right-hand). These directions are relative to the direction of buoyage; this is usually a nominally upstream direction. In a river, the direction of buoyage is towards the river's source; in a harbour, the direction of buoyage is into the harbour from the sea. Where there may be doubt, it will be labelled on the appropriate chart. Often the cardinal mark system is used instead, when confusion about the direction would be common.