Intravenous (IV) therapy is one of the most common and important procedures in modern healthcare. IV cannulas allow healthcare professionals to establish access to a patient's vein so that fluids, medications, blood products, and other prescribed therapies can be administered efficiently.

However, not every IV cannula is suitable for every medical application. Choosing the appropriate cannula requires consideration of several factors, including the patient's condition, the type and volume of fluid being administered, required flow rate, duration of therapy, vein characteristics, and the clinical environment.

For hospitals, clinics, emergency departments, operating rooms, and other healthcare facilities, selecting the right IV cannula can contribute to efficient treatment, patient comfort, and dependable IV access.

This guide explains the major factors healthcare professionals and medical procurement teams should consider when selecting an IV cannula for different applications.

What Is an IV Cannula?

An IV cannula, also called a peripheral intravenous catheter, is a small medical device inserted into a peripheral vein to provide temporary intravenous access.

It generally consists of:

• A flexible catheter
• A sharp introducer needle
• A hub for connection to IV tubing or other compatible equipment
• Wings or stabilization features in certain designs
• A protective cap or safety mechanism depending on the model

After the cannula is placed successfully in the vein, the needle is removed while the flexible catheter remains in position.

IV cannulas are commonly used to administer:

• IV fluids
• Medications
• Electrolytes
• Blood and blood components
• Contrast media in appropriate applications
• Other prescribed intravenous therapies