Which of the following catheters is used for long-term access?

The peripherally inserted central catheter (PICC line) is designed specifically for long-term access to the vascular system. It is inserted through a peripheral vein, typically in the arm, and threaded until the tip resides in a central venous structure, such as the superior vena cava. This allows for extended therapy durations, making it ideal for patients requiring prolonged intravenous medication, nutrition, or frequent blood draws, which cannot be accommodated by temporary access methods.

In contrast, standard peripheral IV lines are typically intended for short-term use, often limited to a few days due to the risk of complications such as phlebitis or infiltration. Similarly, although subclavian central vascular lines and internal jugular catheters provide central venous access, they are generally employed for shorter periods or specific medical situations rather than long-term ongoing treatment. Therefore, the PICC line stands out as the most suitable option for sustained, long-term venous access.