What is the main purpose of intravenous catheters?

The main purpose of intravenous catheters is to deliver fluids and medications directly into the bloodstream. This method allows for rapid administration of essential treatments, such as hydration, electrolytes, and medications that need to enter the circulation quickly to be effective. Intravenous access is crucial in various medical settings, particularly in emergencies where timely drug delivery can be life-saving.

Using intravenous catheters facilitates not only fluid administration but also the infusion of blood products, nutritional solutions, and specific medications that may not be suitable for oral intake. This method ensures that patients receive the necessary interventions efficiently and minimizes the risk of complications associated with alternative routes of administration.

In contrast, the other options do not accurately characterize the primary role of intravenous catheters. For example, removing fluids from the bloodstream is not a function of IV catheters; they are primarily designed for delivering substances rather than extracting them. Monitoring blood pressure typically involves non-invasive devices or specialized monitoring systems rather than intravenous access. Lastly, while nutritional support can be delivered through IVs, it is just one aspect of their broader function, which encompasses various medical needs beyond nutrition alone.