What is a primary indication for using a midline catheter?

The primary indication for using a midline catheter is for infusions that are expected to last longer than 6 days. Midline catheters are designed for intermediate use, typically ranging from one week to several weeks, making them suitable for patients who require longer-term vascular access but do not need a central venous catheter. This allows for the administration of medications, fluids, or nutrition without the risks associated with more invasive procedures.

Infusions shorter than 6 days typically do not necessitate the placement of a midline catheter, as peripheral intravenous access would usually suffice. While midline catheters can be used for irritant medications, that is not their primary purpose. Short-term hydration needs might also be met with less invasive means, such as peripheral IV lines. Therefore, the option that best aligns with the intended use of a midline catheter is for infusions that exceed 6 days.