Cannulation is a medical technique that involves the insertion of a cannula, a small plastic tube, into a peripheral vein to provide venous access. This technique allows for the administration of fluids, medication, and nutrition, as well as the sampling of blood. Cannulation is commonly used in hospitals and clinics for a variety of purposes, including intravenous administration of medications, fluids, and radiologic contrast agents for imaging studies.

Cannula transfer, on the other hand, is a set of air-free techniques used in chemistry labs to transfer liquid or solution samples between reaction vessels via cannulae, avoiding atmospheric contamination. This technique is used with a Schlenk line, which is a vacuum line used for air-sensitive chemical reactions.

The process of cannulation involves several steps, including explanation and consent, preparation, procedure, and aftercare. The healthcare provider must confirm the patients identification, explain the rationale for the procedure, and describe the procedure to the patient. The provider must also choose the correct site, vein, and cannula size to minimize the risk of complications. After the procedure, the provider must monitor the patient for any signs of complications, such as pain, redness, swelling, or infection.

Overall, cannulation is a common medical technique used to provide venous access for a variety of purposes, including medication administration and blood sampling. It is important for healthcare providers to follow proper procedures and precautions to minimize the risk of complications.